I think the most sensible thing for him is to fight the winner of Griffin/Silva. No? Also, do you think he could beat Rampage again?
I think the time for the UFC to set up Rampage vs Shogun would be now. With Shogun coming off a big victory againist a huge name like Liddell, a Rampage/Shogun fight would get a lot of hype. Unless the UFC thinks Rampage will beat the eventual winner of Evans/Machida and they give Shogun the winner of Griffin/Silva praying Griffin wins so theyre set up for a big rematch either way.
Not going to happen right now. Rampage already secured his title shot. They aren't going to fuck over one of their biggest stars like that. He gets his shot either @ 102 or 103. Most likely, 103.