I had been wondering who Raven's bf was going to end up being. I was a little bit surprised that it was Finn, but I guess they are setting up the "traditional" love triangle this way.

Banishment was actually an extremely common punishment in older societies. The fear of banishment was often stronger than the fear of death and was a very strong deterrent. It was often considered a softer punishment that death though, because the person at least had a chance to survive.

Do I think they made the right choice in banishing Murphy? I think Murphy was a problem that needed to be dealt with. Will banishing him come back to bite them on the ass? Probably. It does seem to be that kind of show.