I left Denver for a few reasons. One is that Denver was basically me alone against the world most nights. Also, Atlanta was built like a team I wanted to run (shooting two-guard, big men who could rebound and defend, and competent backups), but the biggest reason was that I wanted a new challenge. I carried Denver on my back to a title, and I didn't think I had anything left to accomplish there.
In addition to the hair changes, I patch my guy up with bands and the like when he gets hurt (I put a hand brace on him when his wrist got hurt last season, for example). I like to think it's more believable that way.