Thinking about joining....would Far Harbor be too far removed from the action to be relevant? 

I was considering taking over The Institute remnants and having them migrate over to Far Harbor. The premise would be that after scouting out locations of still-active Vaults, they determined that Vault 118 showed some of the most promise, and so moved their operations there with the goal of expanding and renovating it. 

They'd still be interested in the goings-on in The Commonwealth, but after the debacle that happened I would think it would be logical for them to want to get the hell out of dodge.