All in all, I think Mac could have become - might even still become, elsewhere - an average NFL starter. Bill's negligence, both as GM and as HC, made this impossible here. Mac is not good enough to overcome such negligence and stupidity. I'm not sure who, other than perhaps a few stellar outliers, could have done so. The net is that we do not as yet know what Mac's actual upside might be. We are left knowing now only what we knew when he was drafted: that his upside potential is probably limited at "average." The data is so corrupted by Bill's failures that no more definitive evaluation can be made. If I had to quantify the causes for Mac's failures here, I would put the blame at about 75% on Bill, and my solution, my way of avoiding a repeat of this ugly interlude, would be to fire it's main architect: Belichick. His fanboys will need to find another binky. The team has to get going on the rebuild, and ****yfooting any longer around the obvious facts of Bill's failures is a waste of time.