Roman Reigns

Let me preface this slide by saying that this is quite unlikely.
Roman Reigns is Vince McMahon's pet project and is scheduled to face Brock Lesnar at the Greatest Royal Rumble for the Universal Title, which is probably not going to SmackDown Live. (unless, of course, the plan is to have Reigns lose to Lesnar yet again)
Look who just shut down all of Tony Khan's critics! More HERE.
However, giving Reigns a fresh start on SmackDown Live after being unable to usurp Lesnar on Raw, while also defeating practically everyone else, does make sense.
And it could perhaps...just maybe...give the WWE a golden opportunity to have him turn heel so that he can actually begin to get over with the WWE Universe in the long run.
Would it be a gutsy call...absolutely!
But hey, fortune does favour the brave, doesn't it?