Bobucles, excellent point on all points. As you said, weapons should not be divided between ground and air vehicles, as their shape is defining enough. This has already been discussed and is a good direction IMO. How hard, mathematically, would be to make weapons aim at where the target will be at the moment of hit instead of where it is now? I think many games use this mechanics, so probably not overly so. And, of course, off-road movement should be allowed!