What about making all the old raids as easy and brain dead as the CT ones, and removing the current raid from the roulette. If I want to run current tier I'll join the current tier I don't click on a roulette. And yes, the only thing that I want from the roulette is the very quick tomes, nothing else, so CT every day of the week until all the other old raids can be done half asleep.

Paraphrasing someone important, if you want challenging content go do ultimate. Off you go