New soundtypes, for example moving sounds (engine sounds)?

[centurion-1]

Hey!
Since 3d audio is in and spring is fully 3d, I'm wondering if it would be possible to add more soundcategorys than the order sounds, for example movingsounds, a low engine rumble and say the sound of tankstracks to tanks, whupping rotors for helicopters, jet engine sound etc. Right now only weapon sounds in Spring makes battles sound a bit unrealistic, and when you zoom real close to a tank collumn for example its kinda unnatural for it to be silent. AFAIK this hasnt been asked for before and perhaps would not be to hard to do?