Now that the duties in Main Scenario Roulette have Duty Support, I think it is time to retire Main Scenario Roulette and move those rewards elsewhere.
The 50/60/70/80 Dungeons Roulette now contains MANY dungeons over a large range of levels, and the rewards seem lackluster. I would love to see it broken up (maybe separated into a 50/60 roulette and a 70/80 roulette) and have their rewards increased.
Since many parts of the story are locked behind trials, which cannot be done with Duty Support, it is important that people feel motivated to queue for roulettes containing story trials. Adding more incentives here could be a good idea, too.