Was going to start a new thread to ask this but found a search so hope its ok.
Thinking about Pet Peeves there are two that come to mind.
1. Kickout of multiple finishers just because its Wrestlemania.
2. Is the big one where say a wrestler who is on top and then because he goes out of the main event scene he suddenly becomes a jobber. Just for a example ill say Yokozuna. When he came in he was virtually unstoppable and aside from the 2 Mania matches where he defended twice apart from that he just dominated everyone. Then he goes out of the main event scene and hes losing to a ton of guys. Sure if its a new guy like Vader im willing to accept but for guys that had been there for a while just to put them over so they can go on to better things just didnt seem right.
Vader was another one debuted, kicked people asses and after his push fizzles out hes on Heat getting pinned by Edge who as this time was a new comer and I believe he had already lost to Gangrel on a Raw I think.