The addition of a wider variety of sounds would benefit everyone. They will allow for fine tuned customization. Sound is a huuuge factor in many games for me. It offers the opportunity for much more immersion. A few ideas for extra sounds have already been mentioned. I'll list what I think would add another dimension to the game:
1) Ambient sounds - another thread had discussed this already: flowing water, crickets, birds, artillery and gunfire in the distance - anyone who has played Combat Mission knows what I'm talking about. ex: bird.wav, circket.wav, ambience.wav, monkey.wav?
2) Interior/Exterior sounds - This allows for a muffled 'inside the cockpit' sound for engines/gunfire/bombdrops/whatever. I think it will give players a greater sense of being in an enclosed area. The glass damage effects (blood/oil/bullet holes) give this effect... sounds will enhance this. ex: 20mm.wav (external), 20mm_i.wav (internal)?
3) Multiple engine sounds - Damaged or rough running engine sounds would be another great addition. Take a bullet to your engine block and your oil begins to leak... eventually it will overheat and seize up. I'd like the transition to be noticed audibly

eng_d.wav?
4) More diverse damage sounds - Multiple bullet hit sounds per round type.
ex: hit20mm_x.wav where 'x' = 1-5 sounds
hit50cal_x.wav where 'x' = 1-5 sounds
etc...[/b]
5) more suggestions? As I've already stated, sounds are an important issue and I hope this is considered
Whatya think?