And to answer this, I suppose we will all need to disclose which role we started as. That may flush out people who *started* as Werewolves although those people might be Town now so that's a problem we need to deal with.
I wonder if we should wait to disclose our starting cards, until everyone has turned up, so that people have a general idea of what the heck is going on. Most of us, I think, haven't played this game before (myself included!).