Nothing was terribly wrong other than, why would you sit your best or most effective RB? Because he doesn't provide that breakaway (once in a game maybe) threat?
I find Kelly to be arbitrary when using his players, maybe even capricious/whimsical not thinking or knowing. Robert Hughes and Jonas Gray come to mind, especially Robert Hughes.
GAIII doesn't run well and appears to not be able to handle the bulk of the running load - Cam appears to be able to. Carlisle - three words - injury prone, smallish. or Not a power RB.