Yuck. I can find something to like in almost every era of outfits but this was complete garbage. The X-Men should never be uniform, their outfits should always reflect their individuality.
I'm of the opinion that there should always be a uniform, but then each character exists somewhere on a slider between just wearing the uniform and wearing a completely individual costume. Characters like Cyclops, Jean and Kitty should be close to the stock uniform, while characters like Gambit and Wolverine should wear their own costume with maybe an X buckle or patch on it. Everyone else falls somewhere in between on the "team player to rebel" slider.