RECON: highlighting enemy fighters that are airborne was done from Mosquito's, P-38s' and a wide range of other aircraft. It could simply be a mode you can fly but with no ammo like Attack or Fighter. Scoring method is good.
B-29: I hear the complaints, but the ultimate weapon against any B-29 is the Me-163. 262's will shoot them down with impunity as well. At 500-1000 perks, will it be worth it? You'll also have Ta-152's, P-47's and P-51 initially waiting for 29's to get the additional points - both perform superbly at high altitudes as well if flown correctly. Besides, no matter how high you go in your B-29, SOMEONE is always willing to up an aircraft and shoot you down. It's not a game destroyer IMHO.
Shockwaves - one of my biggest issues as a combat veteran, is the lack of shockwave effects in any game. Someone could drop a 1000lbr as I sit on my aircraft on a runway - and if I'm outside the damage radius, it just goes poof. In real life, when ever HE ordinance explodes, be it dropped from the air or landing from tanks or explodes close by in the air as flak, it's the shockwave that hurts just as much. Blowing out windows, peppering buildings with dirt and debris it kicks up, blowing over cars, and throwing around debris and dust. If you've ever lived through an explosion, you'd know the effects. It should impact and shake you like God pounding on your back door. It hurts and rattles your teeth (this is a literal thing - not just a figure of speech).
It may not break any bones, or cause catastrophic damage, but it will mess up your day. This is not modeled in any sim I've ever played. And I KNOW, being an army combat veteran and an instructor. Explosions will mess you up - you may look intact, but inside, your hurting. In fact, most IED's kill from the shockwave - not the shrapnel it produces.
Pyro has modeled radius damage very well, but shockwave effects and damage is VERY hard to model if not near impossible with the limits of computer simulation.