I think they should introduce it... and make it influence the rewards A LITTLE BIT. That way maybe "leechers" will do more, but the rating system itself does not affect it too much. That way, ppl think more of the rating system than what it actually is!
--> thinks outside box... of course they can't admit to this plan... and eventually people would figure something out. But hey... I don't see how this can go too wrong.


edit: Although thinking about this... I can think of some differnet issues. Like people wanting to be the only strong person in the party or kq to get better rewards. But is this really a bad thing? The you wouldn't get people quitting kqs as much just because their party/ kq group is weak....

True, your performance in the KQ should affect some outcome....A cleric who's been spam healing/a fighter eho's been spam kicking and mocking and doing his best etc. should get something like a bonus.