Let's stipulate for the moment that the public evidence is mostly correct (and that may not be the case, or it could be worse). I'd opine this would result in major penalties, forfeited wins over a period of years, fines, ban on post season play for X years, maybe 3, scholarship reductions, lack of institutional control and show cause penalties, and probably a nearly complete dismissal of the staff. I view it as a major violation not seen in CFB in years. I could be wrong of course.
It would be short of the DP, but not by much. The key would be, I think, linking the "stealing evidence" to specific coach actions in games. If that happens, and it might, it would be "bad". JH would have his safety net in the NFL of course. His assistants wouldn't be nearly as lucky.