How will the number of vanilla villains be determined? And how will it be decided which villain roles will be in game? These are important questions to answer before we start, imo.
There are 18 villain roles, 5 heroes and 23 players signed up. If you use all roles, the villains will just need a roleclaim, and then it will be obvious who the heroes are. This should be avoided.
If you gave excluded identities to some of the heroes like in mafia 42, that would solve a part of the issue.
A list in the second post of all environmental effects would be handy.
Also, it turns out I might not be able to finish participating in this mafia, so I'd like to sign myself off.