My view is that there was good cause for IU to fire Wilson (otherwise he would have fought for the millions left on his contract) AND that he is a great hire as an offensive coordinator.
If I were an AD at any level I would not hire him as a head coach, but I would hire his an an offensive coordinator. Offensive coordinators do not have authority over any of the things that got Wilson fired at IU.
I have confidence in the OSU strength staff. They have a stable leader with a history of developing players and no issues around putting injured players back out on the playing field.