If Syn was mafia, then Syn "holsters" and mafia just kill like me or Ran and win the game by voting out Bianca, unless the team is exactly Syn/Ran or they were too terrified of missguessing with the doctor. But even then they could have shot whichever of Tak or ts who were town and gotten Bianca voted out.
If Ran was mafia, then she figured out that Bianca was fakeclaiming and deliberately cc'd to get townread. This wraps back up to the same problem of why not just kill me or Syn and get the win by voting out or letting Syn shoot Bianca.
I don't think there's any other options left at this point. Like I guess Ran/Syn is technically a possible world but that would have to have been such an elaborate, convoluted plan and they're independently v-read already and there wasn't really much need to do it.
I think ts/Tak is the only team that makes sense.
##Vote: Takhisis