Some suggestions, mostly quality of life, obvious things

[Nahara]

Duty Roulette says you have to complete at least 2 objectives for the reward (I think--I'm not in the game atm to check).

You get your reward upon successful completion of the duty, regardless of the objectives (like bosses, or even those "open the door" objectives?) you were there for.

Is it kinda cheap? Yeah, I guess, but it's better than being stuck without someone to come replace who was lost.

Aneas, of course people could choose a specific dungeon to join In Progress and just happen to join my party mmmk? They wouldn't get the Roulette bonus but would join the party that used Roulette.

Be reasonable, here. It's way more efficient to fill empty party slots in ALL dungeons by allowing people in the Duty Roulette to queue for in-progress, then to hope that someone is both queueing for your dungeon specifically and queueing in progress.