I personally like mic use on a server, especially when you have been playing with someone for a while and then hear a high pitched squeaky voice, too funny

But unfortunately on D2 i don't think it can work because:
1. Too many players
2. Once it gets abused it's a free for all
3. It is hard to control for an admin
4. There is always a music player (but worse there is always someone who likes the music being played) :unsure:
I think having one night with mics on would be good. Like a Saturday night or something. It's a good laugh
Edit: It doesn't actually bother me as i play with no sound permanently.