#2 Cody Rhodes and Goldust
It really is a credit to Goldust's longevity in the wrestling business that this sibling duo could not only compete on the same show together but also work as a team. There are a massive 16 years between these two, yet both of them remain active wrestlers today.
Before Cody Rhodes left WWE for greener pastures he was embroiled in an angle with his older brother. They were a team, then they were enemies, WWE didn't really seem to know what they were doing and it must have frustrated the both of them.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
Eventually, the company waited too long to pull the trigger on whatever they had planned for these two and Cody left. The Stardust gimmick was obviously only worth doing if it was leading somewhere significant with his brother Goldust, but it got to a point where that ship had likely already sailed.