As inept as NFL officiating has become, do we really want a triumvirate of off-site officials spending time evaluating and discussing calls over a period of several minutes? It was cited that Coach Payton has suggested this, but I'm not in favor it.
While I want the calls to be made correctly (and I understand and accept the factor of human error to a certain degree), I really cannot fathom a game of 4+ hours. I'd run out of beer before it was over.