Well, part of it is I think the game is done growing as an "airpower" game.
We've already got all the super-planes of WW2, nothing else can be introduced that will see any significant use, besides a 1944 Spit and possibly some other late war Russian super-planes. The P-63 is the only American plane left that I think would see any real use.
On the other hand, there is lots of room for growth on the GV side.
The Sherman would see a fair amount of use.. a Sherman 75 is about as good as a T-34/76, and a Sherman 76 would be about on par with a T-34/85.
For the British, the Churchill, Cromwell, Sherman Firefly... lots of tanks there that would be good to have.
The Germans still have the Panther, and a bunch of Tank Destroyers that would offer a significant choice and probably see a fair amount of use (Jadgpanzer IV/70, Hetzer, StuG III, even the Jadgpanther could probably be a "free" GV).
The Soviets still have the T-34/85, the IS-2 (JS-2) which would be almost as good as a Tiger, and several cool TDs such as the ISU-122, SU-152, ISU-152, and SU-122 (although that used hollow charge rounds for "tank destroying", which we don't have, and was mainly a SP gun).
Any of these (actually, all of them) would be offer significant choices to the current crop of GVs (firepower, size, speed/mobility).
I think the next main "push" for the growth of the MA should be directed towards fleshing out the GV war.
I'd also like to see the crew modelled in the GV damage model, I think that'd make things a little more interesting. For example. if the tank commander gets killed, you can't use the cupola view, gunner gets killed you can't use the cupola view (on the rationale that the tank commander would take over), loader gets killed the rate of fire decreases, driver gets killed either the tank is immobilized or the rate of fire decreases (the loader could take over the driving), that sort of thing.
One thing that I think would make a difference in the use of the T-34 now is if "ready rounds" were modelled. For example, the T-34 had 6 rounds stored right in the turret, with the others in the floor under rubber matting. This is modelled in the game now as the T-34 having a rate of fire about half as fast as a Panzer IV. Instead, a cool way to model it (in my opinion anyway), would be to give it a normal rate of fire for 7 rounds (1 in the barrel, 6 "ready rounds"), then halve the rate of fire after that, with say 12 seconds to reload each "ready round". So you fire off 7 rounds, then 12 seconds later there is a round in the gun, if you don't use it then 12 seconds after that you've got 1 "ready round" in addition to the one in the gun, 12 seconds after that you've got 2, etc.
This would allow the T-34 to compete in a short firefight while still modelling the really retarded ammo storage.
Just an idea though.
