What I'd like to at least see them do is automatically unlock high level roulette once you hit 50 or 60 now, instead of forcing people to have to individually queue for each of the many dungeons before they can use the roulette itself. They did that with Trials roulette in the expansion, if you didn't have it unlocked pre-HW it unlocked for you now. There's really zero reason to force people to have to run each one separately at this point once they hit 50/60.