[Imp]

Agree clearing your own stuff is a problem but this is a very old game, pretty sure if it could be fixed it would have been. The AI on occasion clears its own stuff but you know to leave a one hex space so they dont so not realy a problem for you. Mines & wire are better placed a few hexes away from your troops so they are dealing with when you open up. Alternativly stager a bit with gaps & place your units to engage just after pass through. Now routing units run into them great fun.

Most people do not use bombers very often okay you could argue Stukas Sturmovicks etc 2 men but as said whats the point adds nothing to game play they would try & hide till can make ther way back or surrender.

This is a ground combat game as said previosly air is dealt with abstractly when set to XXX or by you if set number allowed, the games flexible like that its your call.
You want it to be real how often do you think air is intercepted over the battlefield?
WW1 no radar & yes can happen but WW2 they get engaged on the way to or from there strike most times dictated by best intercept vector or shot at by ground units at the target area, thats exactly what the game models which is far more realistic than your idea.