I've shot troops on the ground defending the maproom.
I know Kaos1 has also killed troops on the ground and has shot bombers out of the sky as they flew by (If you don't believe me, go check the scores and you'll see he as 3 kills in a chute).
Killing bombers is unrealistic, but having a .45 on the ground is fun for those who want it and a non-issue for those who don't use it.
I'd like to see HiTech create LMG, MMG, HMG, Bazooka/Panzerfaust, Mortars etc and give the option of leading the troops from the M-3 or C-47 with commands like [pause],[advance to maproom], and [assault].
I see this doing 2 desirable things such as:
1) Creating pitched land battles that would cry for coordinated air support,
2) Creating more ground targets for the Jabo/Attack planes
For those who are against the .45, you can have it when you pry my cold dead fingers off of it.