"True it was outdated being design for a Second WW1 and the fact that it wasn't completed didn't help much. Not to mention they didn't have a single AA gun system at all. However, if they based the line as so, cannon, AA Gun, cannon, AA gun. It probably would've held out at least a little bit longer."
What made the Maginot Line ineffective was the idea of using it as a pivot in the defence of France. The line itself could have been made very effective, whether it was finished or not.
France had anti-aircraft artillery all through the Maginot Line, and all through France. Your extremely simple idea of "cannon, AA gun, cannon, AA gun," actually makes no sense and is certainly no way of improving the Maginot Line.
"Also, did the french have close air support over the Maginot line?"
The Armeé de l'Air covered the Maginot Line, yes. The Luftwaffe achieved air superiority over the sector's of assault though, which allowed the Ju 87 and other bombers to destroy the sectors. Intense anti-aircraft cannot be everywhere, and on a static line this flaw is trebled.
"Yeah, I never thought of it like that. Once the war started the whole point is to push forward and gain ground. I just failed to grasp the consept."
Forget trying to grasp that concept, Chief. The idea of war is not to gain ground, that's Great War thinking that costs a lot of lives. The idea of war is to destroy the opposing army, you always aim to destroy the opposing army. You fight over land, not for it.
"I'm assuming when you say going around you mean by sea landing, Cause I said if they finished it, meaning extending it from Sea to Sea, but regardless your right."
The original design went from sea to sea, with the sector facing Italy called the Alpine Line. However, the alliance signed with Belgium in 1920 stopped the building of the line to the English Channel. It wasn't until 1936 when Belgium declared neutrality that the French had to rush the build to the Channel. But it would never have gone through the Ardennes forest.
"As a defensive possition is one thing, but after the allies had gained the initiative it you wouldn't be able to move it, so than it would just prove to be just a waste of resources."
Having a defensive position is a good idea, it's a holding point behind the advance. You don't need to move them, just build another one. Not all would be as expensive as the Maginot Line.
The Maginot Line was grand and expensive but was not effective. As I stated before only infantry attacked the line. There were so many blindsides to the fortifications the German infantry could move in and amongst them to destroy the fortifications with little worry of injury. The line also lacked depth, there was a strong frontline and a few really weak rear lines. Once the Germans had broken through one line, they'd broken through the whole defence.
