On goddess you could change the appearance of items except in Olympiad. Of course you couldn’t change glows. Having for example a +7 weapon looking as +14 (red was on +14 on goddess). We already have white dark pirate suits. So in my opinion it won’t affect much open world pvp.
also you couldn’t change from heavy to light look or robe and vise versa.
From Olympiad it should be disabled for sure.
On previous chronicles, though, there was some amazing sets to copy the look.
Aka vesper noble, apella, dynasty, dragonic, elegia.
Now who would pay to use the look of a plated leather set Or for the look of shitty aoba I can’t really imagine.