Y'know, considering Goldust was always supposed to be some screwed-up freak, the S&M outfit thing does kinda make sense for him.
Also, this one didn't exactly make me go "WTF," but I really hated Kane's costume in 2002-2003, right before he took off the mask completely.
This one right here. They'd just sort of thrown away the whole fire motif and given him a half-mask that didn't look nearly as cool as the one he had before that. He looked less like Kane and more like a TNA knockoff of himself (well, I guess that's Abyss, but still)