If gear's not completely separate from costuming like City's was, I vastly prefer the new version of gear, where you have "gear slots" where you put the ugly leveling-up stuff, and "costume slots" where you put the cool looking stuff. If you have something in a costume slot, it overrides the visuals of the gear. If you don't have anything in a costume slot, it defaults to the gear slot's look.
I also really like the concept of "gear dye" but so many games do it wrong. Too many you have to have an individual pot of dye for every single piece ever. Instead, I like Guild Wars 2's version where you find a pot of dye and use it to apply it to your pallet...and you have that available forever, to use as often (or as little) as you like.
^ more games need to do both of the above. (even better to do it like City, but that'll never happen)