I wouldn't mind seeing the Vote Kick requirement changed to 3/4s including the player being voted upon — 3/3 in a 4-man or 6/7 in an 8-man.

At that point though, many groups may become frustrated that friends of even outright AFKers are protecting them from kicks.

Sidenote: I've been replaced after a successful daily roulette speedrun right before I could start the final boss a good 9 times by now, sometimes even with the apology "sorry, but our friend needs daily". Even this, with screencap, is not enough to warrant GM action, apparently. Therefore I'd say your best bets in these regards are a change in vote policy, though it would do nothing for players who queue solo.