Well, I know one thing, I'll never play this game again.
Regarding the PM's:
If I was following the thread and then finally some stuff was happening, but I didn't know what was going on just because it was all going on via PM's, that would be frustrating. If there was a rule against it, and then some people would break it (steam, skype, etc.), well, it's their own decency. You can't help if the person is corrupt to the core. You can just have pity on his/her soul. You have to trust people (and they have to be honest) if you are to put a rule against the PM'ing.
I really don't mind since I'm not playing anymore, just my 2 cents about the matter.
Also the timezones were a huge problem for me, all the nights (edit: apart from the last one, we (wolves) kinda decided that we want to delay the night to a time that all of us are online) ended at 3 am (GMT+2)
If I am a scum and an investigator with enough votes on his/her townie group gets a positive investigation, boom headshot. If I had valuable information to share in favor/against the town, they all died with me because I didn't have the chance to speak for myself. It really irritated me not to be able to see the night end, this also is one of the reasons I decided not to play.
Anyway, I hope you guys ditch this closed-setup (sorry for my language here) bullshit, it added more stress in the game more than anything I guess..
I'm looking forward to follow the next game, trying to guess who is what without playing is more entertaining to me.
Try to have fun, everyone!