I recently started recording more demos... So therefore a suggestion what might be a good idea:
1. make the /demo player better (eg fast forward, rewind, change speed...) plus allow to remove HUD etc..
2. you can cycle through stuff that you carried, why cant you see the stats (if you press tab it quits...) I would suggest that the only key that would exit would be esc... its realy a drag when you watch longish demo and in the middle you press some stupid key and it quits...

other than that I'm happy with the game and dont want to add any class/building/weapon
maybe it'd be great to balance the game a bit..
I love playing for aliens, but I see that they have slight advantage in the endgame (as3 vs hs3)... or maybe noobs mostly prefer human team.. but when I look on the stats of server I play on, the aliens have slightly more wins that humans do... (maybe except for ATCS being the one exception...)