2014 was easily a 10-win team sans Van Gorder. Literally swap him with one of the other defensive coaches or analysts and send him packing, and we would have won Northwestern and Louisville.
2015 was a playoff team sans Van Gorder. He directly cost us Stanford, and Clemson is arguable.
2016 inexplicably had him for 5 games, when he should have been off the staff at least a year earlier. Texas, Michigan State, Duke....all of those would have been wins with any other replacement-level or worse D.C. And had we started 4-1, I sincerely doubt we've have finished 4-8. I can't be convinced we'd have collapsed against Stanford, Navy, and Virginia Tech if we weren't already having a disaster of a season.
Bottom line, we'd have probably won at least 30 games in that stretch and made our first playoff appearance. Instead, we won 22 games and set the program back from both a recruiting and player development standpoint.