Not sustainable in the long run.

Right now one of the main motivation is the exp you get from completing low level roulette, but as more and more people hit 50 on all the class they wanted to play, that 60 mythology isn't going to convince anyone to run the roulette if it is going to be slow.

Run a Brayflox in sub-10min for 50 myth, or sit through 30+ min on a low level dungeon.

And by the way a lot of the high level gear sucks when synced down, unsync'd green/pink gear will give you more stats.