Fairly sure guys like The New Age Outlaws, Christian and Henry will be in there, I doubt people like Jericho though. Isn't he on a leg of his world tour? Seems fairly conflicting.
I could also definitely see Rocky or Punk entering after losing their match and going on to win it.
Honestly, quite a shame how predictable it seems it's going to be. The Rumble always gets me the most excited every year, and this year it just feels like a complete afterthought... Which is probably because it is.