Always! If the option exists 9 times outta 10 I'm gonna mess around with designs either based on existing ocs or I'm making up some random design with whatever cosmetic items are available
Its something I do a ton with jrpg type games; for instance I've always put one of my fantasy oc duos into Alchemia Story (few games have locs like dai has tho =3=)
and then on the flip side i've used unison league to mess around and come uo with character designs (albeit inadvertently)
even right now i've just started playing that sky game and while my options for customization are limited i'm still floofing about to make something i can be happy with
there's still like several mask, cape, and hair items that i want but it's going somewhere at least