Adding in not just moving targets, but also targets that simulate enemy infantry would be greatly appreciated. This way you can get a better idea of how effective certain weapons are against infantry realistically. HE shells from tanks, field guns, bombs and other ordinance from tanks, etc would all be easier to test and get good with before entering into a game.
In addition, moving tanks and aircraft for the practice would be GREATLY appreciated. Especially because it would help players practice outside of a live game where they might actually be screwing over their own team in the process!