SMU Mustangs
SMU got an invitation to join the ACC basically because FSU will ultimately leave the ACC, but SMU fans had a lot to say when the news broke that they would finally be in a conference with at least a few decent football teams. They played in the Southwest Conference with other powerhouses like ECU, South Florida, Tulane, and Charlotte.
FSU and SMU had never met on the grid iron before last season, but the Mustangs took advantage of several FSU turnovers to blow the Noles out. SMU made it to the ACC title game before choking against Clemson.
They made the inaugural 12-team playoff and lost against Penn State. Their first year success in the ACC didn't help make their fan base more likeable.
FSU will have to wait to get their revenge since they won't travel to Tallahassee for the return game until 2026.