I'm glad you know so well what I remember and what I forget....and it's particularly nice of you to remind me of things I've forgotten. Being a mind-reader must be a useful skill to possess!
I'll deal with your comments about Hitler's plans for Russia first, then move onto your statements about autarky, and then delve into the tangled topic of appeasement.
Firstly, the Replacement Army (Ersatzheer) was NOT disbanded. Fromm remained in charge from 1 September 1939 thru 20 July 1944. "As soon as possible" is not a timeline. A phrase familiar to military planners that has the same meaning is "as soon as conditions permit." The simple fact is that the Replacement Army remained intact. You can't take an event that did NOT happen (the disbandment of the "Reserve Army") and use it as proof of anything regarding Hitler's intent towards Russia.
Your statements are also highly selective and ignoring all the evidence that contradicts your view. For example, Plan Otto, which started as the annexation of Austria, had a second component dealing with how to invade Russia. Planning for that second part of Plan Otto commenced in July 1940. In December 1940 Plan Otto was renamed Operation Barbarossa. In short, straight after the conquest of France, Hitler orders planning to commence for the invasion of Russia....and yet you're trying to convince me that he had no intention of invading Russia? Sorry, I call BS on that.
Also, let's go back to my previous post about Hitler's early planning for invading Russia. Back in August 1936, he tasked Goering to develop the "Four Year Plan" for the invasion of Russia. Fast forward 4 years EXACTLY and, surprise of surprises, Hitler orders planning for the invasion of Russia. There's no point doing operational planning if you don't have sufficient forces for the task. Hitler recognized that in 1936. The Four Year Plan was designed to expand the German military so that it had the resources to invade Russia. With that plan successfully executed, and with what were perceived as sufficient forces, Hitler embarked on the operational planning (Plan Otto) to invade.
Interestingly, Plan Otto called for the annihilation of 240 Soviet divisions with a planning assumption that the USSR could only generate 60 new divisions in the timeframe. During Operation Barbarossa, the German Army actually destroyed 248 Soviet divisions...but the USSR regenerated 220 new divisions. This highlights Hitler's key flaw....he failed to adapt his plans to changing circumstances. Fall Gelb sought to knock the Western Allies out of the war so that Germany could focus on the Communist threat to the east. When Britain unsportingly refused to be cowed, Hitler had the option of doubling down to remove Britain from the war or proceeding with his plan to turn east. He chose the latter. As I noted previously, whenever Hitler had the chance to consolidate, he instead chose escalation. It was that key attribute that most led to the downfall of the Third Reich by May 1945.
Autarky is the establishment of economic independence and self-sufficiency and hence it is the exact opposite of international trade. Yes, Germany participated in international trade in 1938 because it had not yet achieved autarky. Again, let's go back to the Four Year Plan which started in 1936 with a goal of achieving autarky in 1940. Hitler was more than ready to use whatever tools were available to achieve his goals, which is why other world leaders came to so mistrust him. He would say one thing and then weeks or months later would do the exact opposite. Just look at the treaty signed with the USSR in 1939, accomplished to give Germany some additional breathing room. Hitler had no love of the USSR but he leveraged that treaty to buy space and time so he could finish his "grand plan." Hitler traded with the outside world in 1938 because he had to in order to keep his Four Year Plan moving forward.
The problem is Germany lacked the resources to be self-sufficient. A key shortfall was oil but there were also needs for additional arable land, raw materials, and even extra factory-based production capacity. You can't magically create those things inside a nation with finite geographic and resource limitations without fundamentally altering the make-up of the country...and, even then, you can't magically generate oil if your nation doesn't have that resource. The entire scope of Hitler's offensives can be traced back to the need for autarky. In other words, he didn't want to trade with the international community. He wanted to occupy those lands that had useful resources and pillage them for Germany's benefit. Hence the drive for autarky was the propelling idea that resulted in the war.
I will agree that appeasement is the effort to avoid a war and that once war starts, appeasement is indeed dead. HOWEVER...once that war has commenced, if a country feels it can no longer prevail in the conflict, then it will sue for peace. It is the suing for peace in 1940 that is possible if the Battle of Britain had been lost. The arch-appeasers prior to 1939 would have been among the most vocal in trying to secure peace terms if that's what Parliament decided.
You should note that I don't see appeasement prior to 1939 as a negative thing. Britain needed time to rearm. In 1938, Britain was in no position to do ANYTHING about the German invasion of Czechoslovakia. Likewise, it could do nothing to prevent the invasion of Poland a year later. However, by then, the British Government felt it had sufficient forces on-hand, and rearmament was progressing at sufficient pace, to allow the country to prevail IF war broke out.
Losing most of the Army's heavy equipment in France was a major operational blow. Losing France as a key ally was a major strategic blow. It's entirely conceivable that further operational setbacks during the Battle of Britain could have resulted in the British Government suing for peace. There WERE calls within Parliament in May 1940 for Britain to negotiate terms with Hitler. Those calls would have been amplified if 11 Group had withdrawn, thus denuding London of up-threat defences.
Again, if you read what I wrote previously, I freely admitted the fallacy of the idea that Churchill led a plucky Britain that was united in standing alone against Germany. There were many contrary voices, hence why continued British involvement in the war was anything but a foregone conclusion.
As to rearmament, yes the "10-Year Rule" was abandoned in 1932 but that did not mean that Britain immediately started building up its armed forces. The economy in the early 1930s simply wasn't up to the task of sustaining a massive rearmament programme. The following lists the size of the British Army during the 1930s (the numbers are in thousands)
1930: 317.30
1931: 319.10
1932: 316.80
1933: 316.40
1934: 317.40
1935: 320.80
1936: 339.30
1937: 352.40
1938: 384.80
1939: 1,068.85
It's abundantly clear that, through most of the 1930s, the size of the British Army flat-lined, with only slight increases starting in 1936 and the really big jump only coming after the Munich Crisis. Again, appeasement was necessary because Britain simply wasn't ready for another major war in the 1930s.
About the Ersatzheer : the fact that it was not disbanded is not a good argument :the point is that Hitler gave the order on June 20 to disband it, which means that on that day ,Hitler was not thinking on an attack against the Soviets .That he later changed his opinion is proving what I said : that the Barbarossa decision was not a free ideological decision but a decision forced upon Hitler because he saw no other possibility to finish the war with Britain before the US would intervene .
About Plan Otto : plans do not prove intentions : in the twenties US had plans for war with Britain ,but not intentions .Besides , the war against Britain had til the autumn priority in armament questions . The Wiki article about Plan Otto is totally unreliable .
The Four Year Plan had not as meaning to make Germany ready for war with the USSR .
There is no proof that Fall Gelb wanted to eliminate the Wallies to give Hitler the possibility to focus on the communist threat in the East ,because : there was NO such threat and Hitler knew it and admitted it .
About the autarky : Germany was totally self-sufficient in oil.In September 1939 its imports from South America disappeared, but they were simply replaced by synthetic produced oil.
Germany had in 1939 8,3 million tons of oil (import/production ) of which 5,2 million from imports .
In 1940 6,9 million ,of which 2,1 million imports and the German war machine did not stop.
About appeasement : there were no peace terms for Britain, only capitulation .And we have the proof that the chief of the appeasers (Chamberlain ) opposed capitulation . British position was not bad in June 1940, even better than that of Germany : the only thing Britain had to do was to continue the fight til the US intervened .
About British rearmament : this had nothing to do with appeasement which was born immediately after the Treaty of Versailles .
Britain could not help CZ in 1938, neither could it help Poland in 1939 , but the fact remains that Britain mobilized in 1938 and that Chamberlain told the population that,except a miracle, there would be war in a few days .The only reason why there was no war between Britain and Germany in 1938 ,was that there was no war between Germany and the Czechs in 1938 .
About a possible retreat of Group 11 to airfields north of London : this would not improve Germany's position as Group 11 would still be able to attack the German bombers .And, a bigger destruction of London than happened in the HTL,would also not force Britain to give up : during the Battle of Berlin,a big part of Berlin was destroyed by BC,but Germany did not give up . Thus why would Britain give up ?
About British rearmament : the small increase of the army is not a proof for the claim that there was only a small rearmament ,because there was no need for a big increase of the army .
Priority was given to the LoC with the Empire and thus for the Navy . On the second place came the RAF and the AA Defense to protect the UK against a sudden air attack ( The Douhet Doctrine had a lot of influence ) .The Army came on the last place,and justifiedly ,because Poland would fall before France and Britain could launch an offensive to Berlin . And, even if they could, they would not do it , as the war was not about Poland, but about Germany .
Chamberlain told his sisters the following in 1938 : we can not save, not help CZ, we can only wage a war of revenge which will destroy Europe and the Empire and which will make of CZ a Soviet satellite .
It was the same for Poland .
Britain and France were better off without Poland and CZ,and these were better off without the Wallies .The war was fought for a moral principle ,which was that war was bad and evil and that who started a war was a criminal . ( The Briand-Kellogg Pact ) which outlawed war .