with the amount of destruction those bombers can take to the enemy, I am surprised the ENY isnt lower and/or there isnt a minor perk price put on the heavy bombers. The Lancs, B24's, and B17's all offer awesome amounts of ordnance, especially while in flights. Yes, the Ju88's can carry more ord than the B17, but it is hardly worth mentioning and the only real useful ordnance is the 4/500kg bombs or dual torpedoes. The 20/50kg bombs are best used to carpet bomb and tickle a few ground targets. Also, the Ju88 is slower, climbs like grandma on a ladder, and has defensive armament hardly worth mentioning. I'll keep the "big 3" as they are.
I'll offer a 4 perk point cost per Lanc, 3 per B24, and 2 per B17. If the weak (but very fast) Ar234 can garner a cost of 60, then these three big boys deserve something for their massive amounts of ords.