ratio

[Mgm]

The town is way overpowered even if there's less of them. The docs could protect each other making it impossible to kill them. They could both protect a cop, making it impossible to kill the cops before they investigated all the mafia. Two cops means 2 result each night. If the mafia kill different people than the cops investigate it's all over by night 3.

You should either give the mafia some powers or treat this as a normal game.

The higher number of players doesn't mean you need more power roles, but you may need to provide alternatives if they get killed night one. Backup roles could be the answer.

Also, in a large game a one-shot vig is near-useless. If he has to kill every night you have to account for that kill in your number-crunching.