#4 WWE SmackDown star Daniel Bryan turns heel because he has no other choice
Let's assume that in the WWE SmackDown main event Daniel Bryan comes up short against Roman Reigns. This is likely to be the case because it's very unlikely that they will stall The Tribal Chief's momentum at this point at least.
In such a situation, Paul Heyman could offer an olive branch to Daniel Bryan, where he can stay on the WWE SmackDown brand if he agrees to join forces with their collective. As a result, Bryan will have to reluctantly turn heel and become The Tribal Chief's right-hand man.
This could lead to months of storytelling and several excellent matches between Cesaro and Daniel Bryan. It also starts the narrative of the guys who come up against Roman Reigns becoming subservient to him.
It makes a lot more sense to pull off an angle in this manner than to have Daniel Bryan move to RAW or NXT. If you remember Bryan's heel run, you also remember how good he was as a bad guy!