ORIGINAL: LoneRunner
Hi Bill. Please don't remove double-chit of heavy bombers without the support of a large group of WaW gamers. I think it would be a mistake.
Double-chit of heavy bombers allows USA and UK to implement a crushing bombing campaign over Germany by late 43. Which is historically accurate. The bombing campaign has to happen fast because the Allied player is attempting counter Germany's attack on Russia. Linked with a series of invasions, maybe knocking Italy out of the war, a bombing campaign provides another option for the Allied player.
Using single-chit research, level 5 bombers would not be developed until early 45 at best. Too late to have much of an impact on the war.
By late '43 both allied strategic air forces were getting shredded; likewise early '45 for the first operational L5's is also historical. I think L3's can still do a significant amount of damage without laying total waste to the entire countryside.