I don't think it has been mentioned but I think Grigson/Pagano made a very loud statement with Pep Hamilton. I'm sure they love Arians and appreciates everything he did for the team but I don't think they are too upset about losing him. Think about it, if they wanted continuity, they would have promoted Clyde Christenson. I don't think they were too happy about the design of the offense that allowed numerous hits on Luck.
They hired the complete opposite of Arians in Pep Hamilton. I hope he only sticks to the West coast "principles" and doesn't change it completely to a dink and dunk offense. Also, with the switch I think it changes the focus of free agency. Colts would be ok getting Ted Ginn (KR/PR, speed guy to replace Avery) and Ramses Barden (huge wco type of WR with sneaky speed), and it would only cost the Colts a minimum amount. They could then go after Levitre, Loadholdt, Vasquez on offense and Spencer, Sean Smith and Landry on defense. All else could be addressed in the draft!