I'm in the camp that until someone else is main event over, might as well keep the title on Roman Reigns. If they pulled the trigger on Drew at the Castle that would have been OK because the crowd was so hot but since he lost there, I feel Drew is out of the equation. Putting it on The Rock would accomplish nothing & make the entire Reigns reign feel like it was for nothing. It doesn't help The Rock or anyone on the roster & then he would just leave again. That's like the worst case scenario. Cody winning it would work only if when Cody returns he's still super over. That's the most important thing to me, it needs to go to someone that is over. We don't need another Cena scenario where he's the top babyface & half or more of the crowd are vocally booing him, you know?
I think, like others have said, Cody - if available - will turn out to be the best option but I also don't hate the Rex Steiner idea. Giving a new, young guy a big rub that could help make him & give you a big name/star for multiple years going forward is what WWE should be looking for right now. It's Triple H's show now though, so we'll probably get Karrion Kross or Johnny Gargano instead.