I'm basing it off that we have 2 mafias already, which must consist of at least 2 people each, so = 4. Plus jester, plus Brett = 6/17 if we say that they are mafia (since they would have to be working together) that would be 7/17 if they are part of trigger or nem's mafia (if nem lied about locust) or 8/17 if they are their own thing, so I do not think we have 7 or 8 anti-town roles out of 17 people, maybe, but that seems like an awful lot.