Designing multi-player "organized crimes" for our browser game: how would you avoid waiting and loot scams?

Movetio (https://movetio.com/ [https://movetio.com/]) is a free mafia browser game. Our family heist is live: several family members each take a role and share a co-op bonus. As a more elaborate next step after heists, we’re considering Organized Crimes (OCs). Nothing is set in stone yet, so we’d like input from fellow devs first: - What roles make a multi-player crime feel meaningful instead of just “click ready”? - How would you split loot fairly and prevent the leader from scamming the crew? - How do you avoid endless waiting for teammates in an async browser game? Any experiences from your own co-op systems are very welcome.