Here's a list of things (in no particular order)
I think that the laser-guided bombs need to be sorted out. It takes practice and intuition to get deflection shooting correct (mine sux, btw

). You dont get a WYSIWYG laser guided cannons, so why bombs? It should be an aqiured skill that takes practice and a bit of intuition, dealing with cross winds, slight randomness etc.
Also, it would be neat if you can saw your own wing off your B-17 from the side gun positions

Hangars on airfeilds. Bomb these and loose a plane type or certain number etc. Obviously limited numbers in each hangar.
Bomb craters in runways

Make it illegal to park a bomber on an NME strip. If this happened in real life (no matter how strange this would have been) i imagine some sort of security would have 'relieved' the crew. So if you land on an NME airfeild you just simply die.
A Spitfire XIV

A Me-262

A 109 G6-R6

A Zeke
A Hurricane II
A Ki-84
Mutual head on deaths should result in 2 kills, 1 a piece.
The ability to choose which end of runway to take off from - or which strip. To take advantage of prevailing winds (which dont exist).
Icons should dissapear if your comming out of the sun toward con. Sun should have more of a blinding effect. No one uses the sun

Please dont take these as deficiencies in the sim, just these things may help it be THE BEST SIM EVER

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Overlord Spatula,
1st Airborne Kitchen Utensil Assault Group
"... 10 Me-109s out of the sun..." Aces High, Iron Maiden.