Bray Wyatt's entrance has an Undertaker-type vibe to it, but it's not quite as good now that he's alone. Dolph Ziggler is in the Mr. Perfect/Bret Hart/Shawn Michaels style if you like that. Dean Ambrose is the closest thing this generation has to a Cactus Jack...he'd take the risks if they'd let him. I'm not a big Seth Rollins fan...I think I'd believe him as a mid-card belt holder, but the idea that he's up there with Cena and Lesnar seems strange to me. Obviously they're pushing Roman Reigns, but now that he's not a part of the Shield, it's hard to hide how uncharismatic he is on the mic.
I don't think Daniel Bryan needs to win the Rumble, but if it's Roman Reigns or something happens again like Batista from last year, there will probably be a riot. Wyatt, Bryan, or Ziggler would all probably be okay. They did a good job of making Ziggler seem like a legitimate contender for the World title at Survivor Series, so he could move above midcard theoretically now. There are other people the crowd would be okay with (Cesaro maybe), but they've been buried lately. Basically it will most likely be Bryan or Reigns...I would love for them to surprise me, though.