Costumes

[kaht]

But I suppose players learned to "exploit" it in their favor when being /check harassed and that might have why SE never bothered with solving it.

If you manually type /check <playername> WITHOUT having them targeted, their equipment check screen doesn't disappear when they switch gear.

[Registeel]

I have an innate fear that people would be running around in the level 50 subligar as their costume...

But really, I do rather like the idea of being able to appear differently from what you have equipped. I'd definitely don my Iron Musketeer gear again on PLD... many good memories tied to that armor.