I think the Seer is a great mechanic but should have been brought in when the group was larger. It adds much more suspense, and drama then (at least from having played mafia/werewolf a bunch). Although it also changed the course of a few people's game this time too. Don't think Frankie would have got booted if it hadn't been for the Seer. Don't think Alexander intended that when he was gathering all those coins for her.
I really don't know why she didn't choose to investigate him. There was nothing to lose, either you see he's a traitor and tell everyone and they believe you. Or you see his faithful and have an ally. He would have no leverage over the others like Charlotte did because he was so awful at persuasion.
Enjoyed this season, but god the contestants were hateful. Would have liked Minah to win as I thought she had a good run. I thought Charlotte did well as a traitor but the accent thing was ridiculous and she overplayed her hand by trying to screw Freddie so blatantly. She would have been better off just letting him dig his own grave and pretending to back him and going for Alexander.
I hate how the finals of season 2 and 3 have become some sort of shit advert for the army.