#1 The Usos could be separated as a result of the family drama with WWE Universal Champion Roman Reigns
Perhaps, the most shocking tag team break-up in WWE this year could be between The Usos. It would be another chapter in the multi-layered family saga of Roman Reigns. His feud with Jey Uso last fall was excellent, before the tag team specialist fell in line under The Tribal Chief.
Jey Uso is now a heel whose only purpose is to make things easier for his superior cousin, while Jimmy Uso has not been seen on WWE TV since he inadvertently caused his twin's defeat against Reigns in their 'I Quit' Match inside Hell in a Cell. He may be ready to return in the coming weeks or so, which would further this family drama.
Jimmy Uso might take issue with the way Jey Uso is acting as Reigns' second and defy the Universal Champion's orders. This would lead to a feud between the Uso twins, possibly culminating at WrestleMania. There is so much juice in this story, with WWE fans having no idea what Jimmy Uso will do upon his return.
Sure, Jimmy Uso will likely turn heel and eventually align himself with his family. But before that happens, The Usos could be broken up with Jey Uso being ordered by Roman Reigns to assault his brother. If WWE so wishes, both Usos could both become singles stars on their own as well.
Jey Uso has already shown how capable he is in that regard.