What should Dana White do with the UFC's heavyweight division?

It look like Brock Lesnar is going to be out of action for one heck of a long time (if he ever comes back at all) which means Shane Carwin who's next in line is going to have to sit on his size XXXXL hands for a long time. In the meantime, other top contenders like Velasquez, Mir, and Nog are left in limbo. I'd throw Dos Santos in there too but he's fighting Yvel. So what is Dana White to do? If Lesnar's say, 6 months away from fighting, do you make Carwin fight someone else in the meantime? If so, who? Its been ages since he fought Gonzaga. Should an interim belt be created with say, the winner of Carwin-Velasquez claiming it? Or should Mir get a shot at one of those guys first (he looked mighty impressive last night finishing Kongo, something Velasquez couldn't do.)?