Both of these, plus:1) Increase how often people could votekick.
-a) Side effect: People will abuse it more
2) Tune the fights to require 25 competent people
-b) Side effect: No one will ever use the system, because there's literally no chance of you getting 25 competent people.
- Make it 10-man instead of 25-man, since it's MUCH faster and easier to figure out what 9 other people are doing than other 24 people
Optionally:
- Add a matchmaking system that causes you to lose rating if you do nothing (based on automatic rating and/or whether you get kicked or kill the boss)