Creator of the upcoming AGP Tour, United States of America Jarod "Streetrunner" Reisin has written an extensive article covering additions that Quake Live should have:
"I personally want Quake Live to appeal to people long enough for them to not quit after they get destroyed in their first game. I want them to not feel like they will never catch up to the average Quake veteran. I want them to play long enough to see the joy past the beginning stages of difficulty. I want more players. And I want Id Software to do well with this game and continue their great deathmatch games. That is at least 4 things I want. And there are many ways this can be accomplished. And the game is on the right track. But it needs more to become more than a game. It needs what Halo 3 has. "
The article raises some interesting points on the current state of Quake Live and the potential for the future. Check on Gameriot's Quakelife to find out what Halo 3 has that Quake Live doesn't.

Other articles of interest:
What the community can do
Why Quake is better than any MMO
Why you should sign up for a Quake league