Minimal xp then back in queue for a half hour. I prefer dungeon where I can get real xp.
Considering post story Garuda trials are all 8 player content and leveling roulette is all 4 player content? I don't see it changing. I don't see mixed party sizes being dropped into the same roulette. Mixing party sizes into a single roulette is probably more trouble than it's worth.
I don't mind getting them when there's obviously someone who needs the fight completed for MSQ progression. The whole point of leveling roulette, after all, is to speed queues for old content to help newcomers get through the story easily. It's just painful when you get Fritters story with a party of full 50+, though.