I think it's time for Mastered Roulette...expert is a joke.

[Arrhin]

I think you're missing the entire point of the roulette system. It exists to encourage leveled players to run lower end content so that leveling players can get a queue. The tomes/gear is you reward for assisting the community.

(edit: Yes, this includes expert. gaining ilevel is still "leveling" and despite the moniker Expert is still casual/leveling content for many)