I'd rather lynch Rot now. Not sure if he can do something with character like Tessa or Kaname (both are Whispered). Better to take down a possible GF (due to his invest result) than a possible fodder like Kat. Him investing so much time on Glob instead of pressuring other players to find the scums is enough to let us know where his priority lies. It's not town well being, it's his own. He wants to know how much Glob can protect the town and if it's safe to kill her or not.