I think that this game has the complete potential to be the best game of all time. I think the comunity is going to be big. Very Very big.
A couple things that I think are key are:
1.) New, professional maps. Smaller
2.) Classic missions (CTF, assassination, deathmatch, team deathmatch, and mayb hosties.)
3.) Some form of score keeping, and of course...
4.) A match league and gametype