-
It's kinda meant to be something of an incentive for playing the "adventurer in need" role I suppose. I'm sure by now we all acknowledge the tank shortage problem for dungeons.
That said, the bonus on low level roulette is usually insignificant. On high level DR, I feel it's more worthwhile because I run (and spiritbond in) dungeons a lot, and an extra 750 gil per run on top of the 3 ~ 3.5k I get per dungeon from trash mobs adds up pretty fast.
The bonuses are there, however the rewards aren't so great that you're forced to running it in that role. I've seen a DPS bonus before - if I see a DPS bonus it just means that nobody is queueing for that dungeon at that moment.
-
I do, but it still annoys me.