Too attack a ground target, the Jabos have to come down low, thats a given, so whats the problem? Its not like the Tiffies will drop at 25k and run home. The Jabos go low, the escorts go low, the interceptors go low...its all going to be low at some point, thats a given .
I can only see an alt limit on level bombers, representing max dropping alts, ex B-17s max at 25k.
Thats how I see it, but its not my call.