It's a problem of gaming the game.
The most efficient way to bomb a base involves hitting the ground immediatly after your bombs hit, saving the long trip back to base.
Even with divebombing buffs 'fixed' it just means using stuff not bound to those rules. (A-20 anyone? 4000lbs of bombs...) If you're going to stop suicide buffs, you might as well do the jabos as well.
Perk the 500/1000lb bombs and the rockets.(Excepting the bomber class planes, excepting the a-20g) i.e. Loading 1000lb bombs turns your plane into a low-cost perk plane.
Reduce the hardness on structures.
Now the primary bombs used are smaller 250lb bombs. The light bombers now have a role in the MA(Free heavy bombs)
http://www.innomi.com/jabos.html (the original idea, bit outdated now though)