You guys don't know me but I am an ancient beast when it comes to playing mafia both online and in person.
Firstly, my take on the setup... Im accustomed to more vanilla setups. Its hard for me to gauge role heavy setups like this one, but my impression is that town has like a 20% chance to win. 6/15 evils is very difficult for town to overcome in my opinion, even in a role heavy setup. Maybe there is some optimal strategy with claiming, whispering and coordinating to "solve" the setup which extremely good players would do. In this case though, town had the work cut out for them. I think a decent/average town would win 20% of the time.
Now for something a bit more dire... I seriously hope this game is not representative of the average townplay on Smogon. This was messy, grim, and downright lazy townplay. You guys were caught up in trying to "solve" the setup ever since day 1 to the point where you ignored reads and standard townplay. I think people were perhaps confused because of TOS and this being a role heavy game, but take it from an old veteran: reading people should be your first approach to the game. If you are LUCKY and FORTUNATE enough to solve the game with night actions, then so be it. Until that happens, assume you need to actually activate your brain cells, ask pointed questions, and use your intuition.
The sheer number of times players forgot who claimed something, forgot that there was a transport on N2, forgot basic game mechanics, lazily asked for vote counts instead of checking themselves was STAGGERING. I realize a lot of this sort of posting came from actual scum players and that is somewhat more forgivable for scum players to do, but general malaise and apathy of the town made it possible for scum to do this without being called out or otherwise looked at for it.