I got matched to Castrum Meridianum, with more than half of party as sprouts. All cutscenes are unskippable, text dialogues are also not clickable, they are forced to auto-advance mode.

Anyway as a lv 67 class I got 2.2m exp reward from roulette, with 250k x2 from clearing mobs and boss, that works out to around 30% of the exp bar at that level.

Clear time was around 30 minutes, so the whole thing seems average so far. If there's no vets running MSQ roulette then those sprouts can make a party to clear fine anyway, if not having more fun than the usual speedrun.

Feel free to share your findings if you have tried the new MSQ roulette.