I like both both ideas of “outfits” and bags/storage locker. Both concepts would vastly improve the equipment interface, for collector types in particular.

There are a few different equipment sets I use frequently, and the lag I experience switching each piece individually has gotten really frustrating. “Outfits” would at least knock this down to one lag instance per change-over.

And being able to put stuff you don’t use and don’t want to sell/auction somewhere else would bring my regular inventory down to a manageable size (and would likely fix the lag too).