#5 Bray Wyatt
WWE just don't seem to have any idea what to do with Bray Wyatt. A former WWE Champion, just in case you forgot, Wyatt has been out of action since last July. And no, Wyatt has not been on the injured list. The perfectly healthy Wyatt has been paid to sit at home for the last 8 months because WWE just doesn't know what to do with him.
They were really grasping at straws by pairing him with 'Woken' Matt Hardy, but things would only get worse once Hardy had to leave TV due to an injury. Instead of Wyatt being given something else to do, he was removed from TV so creative could come up with something for him, and boy did they take their time.
Bray Wyatt could have easily made some kind of return to WWE at WrestleMania during a segment or attacking someone after a match. Wyatt could have easily made an appearance to put him back into the fold, but nothing. We did see a creepy promo on the post-WrestleMania episode of RAW which seems very likely to be hyping his return, but they could have started it at least a month ago, and have the payoff be at WrestleMania.