there are 4 options for the rumble, 3 of which are predictable as hell.
1. Reigns as number one lasts the whole match and retains the title. whatever happens in the match, its odds on it will happen so boring a predictable
2. Brock wins. again the very popular theory here, boring result and even more so that it shows how original WWe are and how much they bend over for him if he comes back and takes the title whenever he wants
3. HHH wins. all connected to reigns sure, but the least likeley of the three tbh. they can't shift him from authority to champion and then back again smoothly, either he is a wrestler or he is a peed off fella when he gets in the ring, can't blur them. So doubt this will happen.
Then there is the fourth option, one that would be the best idea out them all
4. PUT THE TITLE ON SOMEONE UNEXPECTED. swerve everyone, stick it on someone you aren't expecting to walk out the champ, someone new and exciting.
My personal picks are Bray Wyatt, Finn balor, Kevin Owens, AJ Styles or Samoa Joe. Hell stick it on Jericho if need be, and hopefully Taker as well is considered for this as it would be a great way for him to bow out.