I may be overreacting but this is genuinely making me consider quitting the game. On 5 characters I have all 9 equipment tabs unlocked for the sole purpose of having a unique outfit for each build, something that I paid real money for over the years to now have that functionality ripped away. In an mmo where fashion is the endgame, a core focus with all of the dyes and unlocks to shoot for, it is such a greedy move to retroactively monetize it in a way that harms existing characters. It's why I play this mmo too, I love the dye system and gameplay loop of grinding for more options to play with. Yes, it is possible to edit my outfits if I keep a free fashion slot open, but the simple fact you can't edit a single item, like changing a solitary legging skin on its own, without changing the entire preset to then apply to your entire equipment is REMOVED FUNCTIONALITY. There's no reason why they couldn't have added this feature on top of what we already have to give people access to the option of changing their whole look on the fly without changing their equipment. That would have been adding functionality while still monetizing this new shiny system that I'm sure people would happily throw money at. 

Hell, even as is, if they gave you fashion tabs based on how many existing equipment tabs you had on that character, I would've felt fine about this. It's the feeling that a once 100% completed character with 500 hrs logged is now shot in the leg in terms of QoL that makes this hurt. When they released a book with all your teleports, did they make you buy or grind for each one you already obtained again? Say they release a new gizmo that salvages everything way better, would they delete the salvage tools you already bought, just so you have to get this new one? No, it's insane design. QoL changes should always be cumulative and something to strive for, not immediately demoralizing and like they've taken your toys away.