actually, levelling roulette is made so that you can help people in their levelling. Not to ease your levelling. That's why you get a substantial bonus in exp/gils/seals/tomes (?), because by doing this low level dungeon you'd be mostly wasting your time which could have been spent on real levelling (minus the will to help other people, but not enough people have that).

I don't quite get why people still think that roulette is supposed to help you, but it's not. It's made to help others to get a group for whatever they queued for.