I wan't talking about just Lancs (or Halifaxes or Stirlings) but B17s and B24s, too. Think of it: 5,000-odd Mossies, giving a bomb capacity of roughly 10,000 tons per raid, all of them making precision attacks. Wood? Make 'em in America! Crews? Two per plane as opposed to the multitudes that the heavies carried. Retrain em!
OK, they couldn't lift the cookies or Tallboys or Grand Slams, but would you need them?
Think about it. As a matter of fact, I believe someone actually proposed this very thing during the war but it was turned down because of the commitments already made to production. But its a fascinating theory... and perhaps we wouldn't be talking about well over 60,000 RAF and USAAF aircrew dead now...