The BEST scenario, IMO, would put T-Rob at co-DC/DB Coach, and bring in Ed Orgeron as co-DC/DL Coach. I could live with having either as the DC outright, but that may be what needs to happen to get them both on board. That would allow us to get rid of NoD, Williams, and Franklin...and get upgrades across the board. The recruiting payoff alone would be worth it, and I think we'd see results on the field too.
It would also open up a spot on the coaching staff that would allow us to, oh, I dunno...maybe hire a QB Coach (a defacto "OC-in-waiting") on? Someone like, say, Kenny Dorsey???