I think this is a good hire for VT. They get a proven winner. Yes, he has a ceiling, but most good coaches learn their lessons as they move through their career arc, and Franklin is young enough to rebuild his image here. I get a "Vandy 2.0" vibe from this hire. He will have more talent, resources, and support than he got at Vandy, and obviously less than he got at PSU. He'll have VT playing tough football in 2 years, if not sooner.
I still think it was a combination of egos and temperatures in the room that doomed him at PSU. They may well end up regretting showing Franklin the door; Franklin is probably secretly glad to be out of there; and the "Ghosts of Sandusky" still have me hoping that PSU goes 4-8 for many years to come.