I have watched a few Flames games just because I enjoy NHL hockey but to be honest its hard to watch that team when you're an Oilers fan.
From what I did see and what I heard from some media members that were close to the team GG is a players coach first and foremost. He really seems to be able to connect with the players. I heard that the ownership/management group in Calgary thought that he was too much of a players coach which is why they let him go. Peters is thought to be more of a hard ass (sort of halfway between Hartley and GG) which is what they wanted.
GG was very respected in Calgary and I think he will be very valuable in terms of connecting with players communicating systems.