(SOTF_Help looms in the distance, polishing its knives)
In seriousness I tend to assume all vigs are non-compulsive (I've never seen one that had to shoot but I'm sure somebody's used it!) and that town probably has some kind of kill role (Vig, JOAT, some weird jailer hybrid, whatever) just because it helps balance stuff out. re: third party, the site meta as a whole really likes third-party games, usually SKs, but it's a big unknown for now.
re: Kermit/Fenris, I think the issue is less the phrasing and more any sort of, like, celebratory stuff after the night phase tends to be kinda suspect/scummy behavior. I'm not seeing it that hard here (but also need to comb through again). I will say I was kinda looking askance in the first phase at Kermit's and Yugi's jokes... especially Yugi's, because hiding a real claim in a memey fake-claim for eventual bragging rights is like right in the playbook there. However, the fake claim is (presumably) town-aligned, so I guess I'm mostly pulling this as an example of odd behavior and also if for any reason we start to think there's a frog-flavored SK I think Yugi's on the biology lab menu.