HTC needs to double check the OBJ scores of a LOT of aircraft, imo. First, the score of 10 should be applied to "catch all" planes like the P51D. Have 10 be the standard as it is now, but have the OBJ score a bit more dynamic. The plane that still boggles my mind is the Ju88. A players ears FEWER perks points in a Ju88 than if he was in a B17.
More should go in to the OBJ score than just ordnance, and on some aircraft it does. The Ar234's do not really carry much ord (3300lbs), but it has the speed to get in and get out without being touched.
I think there is too big of a gap between the B5N and Boston, and the Lancaster and B24 crowd. Also, I think it would be wise to apply a perk price to the Lancster, B24, and B17. Even if the cost is minimal I believe it to be warranted thanks to the amount of destruction they cause, the defensive armament they present, and the speed in which they can do it in.