#3 If Jey Uso loses to Roman Reigns, he has to leave WWE (or move to another brand)
Roman Reigns keeps stressing on the fact that SmackDown is his island and so if Jey Uso comes up short during the match (as he invariably will, because nobody is going to stop this version of Roman Reigns for a while), he will have to leave the company. Of course, the other version of this stipulation could be that if Roman Reigns defeats Jey Uso, then the latter has to go to NXT for a brief run.
Some of you may think that this is a demotion for The Usos, but it really is not, because they are a team that can hold their own against anyone, in almost any style, and can really mix it up with the tag teams on NXT, who could benefit from working with these veterans. Finn Balor is in NXT right now and Charlotte Flair was a part of it, for a brief duration, and so there's no harm done.