I know I'm beating a dead horse but...
Outcrowd's post shows a point strong against RP tokens.
You failed a quest, but did it while RPing. I'm also assuming it really screwed you over, or someone else at least from death or financial drain, used equipment... whatever.
Gonna make this really brief, but let's look at two scenarios of this:
1) You have an RP token.
-or-
2) You get an XP boost for doing a good job at making the quest more interesting, or RPing well.
In the first situation, you really don't get any reward from the token anyways, except for accelerated XP gain from the monsters you did kill before failure. Chances are though, it still isn't worth it. In addition, you didn't actually have to DO anything specific to make this quest any better.
In summation, you're getting a bonus on this quest that everyone else doesn't get because you're gracing them with your presence.
In the second situation, you would have had to do something special and specific to reap the rewards. You will have had to make an effort, and you would have had to RP consistantly. You absolutely have to EARN it... and even if you did all the work to earn it, you still might not get anything special because the DMs are trying to serve the players before rewarding them.
In sum, the second way requires a pro-active attitude towards RPing and plotweaving. The only inconsistancy is the reward, but if you're playing for this kind of reward, then maybe this isn't your kind of server. Or better yet, just try and refocus yourself on to what EfU is about- storytelling (or really, more of storywriting)
Fortunately, I can't think of anyone on the server who seems to have this kind of attitude. Perhaps I'm being naieve, and it's just because the server is young and the older characters are still somewhat fresh... but I don't think EfU will really have this problem, even if for some reason RP tokens are instituted.