Im thinking Operation: Citadel (Battle of Kursk) would be a nice scenario. Mainly for two reasons: one, its an Eastern front battle, which would be nice to do, and two, it has potential for an 'Aces Low' element also. This was an important battle, too, because it was the battle in which the VVS finally gained control of the skies. That and I personally think the 1943 planeset is the most fun. Im thinking the planeset:
Luftwaffe:
Fw 190A5 (was the A8 around in 1943?)
Bf 109G2
Bf 109G6
Ju 87
Ju 88
Panzer
Maybe one Tiger unit.. but, all things considered, this probably would not be a good idea.
VVS:
Yak 9T
La 5FN
Spitfire MKV
Hurricane MKIIC
P 40E
Il2
A-20
T34
Im not sure what the objectives would be (though, it most likely would be a simple attack and defend), but with a mix of ground and airforces, encompassing escorting, bombing, intercepting, air superiority, ground attack, and vehicle to vehicle, this would probably one of the most fun things we could do, and would have something for everyone (especially with the varied Russian planeset). The reason for no Tigers is obvious, the T34 we have is already outclassed by the Panzer, but, technically, the Soviets should have a numerical advantage. Ill try to find some sort of ratio, and do some more research on the battle.