What do you want to see in the Katagami (vanity) system?

[ispano]

I really hope not.
It's not really something that needs to be complicated at all. Not that the transmog system is complicated, but a basic slot is much more to the point.

I'm honestly trying to find it, swore it was in one of the Live Letters where they said it wasn't separate slots. I'll keep looking though.

EDIT: This is NOT the quote i'm referring to, but seems related.

Looking ahead to Patch 2.2, crafters will be able to alter gear designs using a “template” system (official name TBD), giving them yet another role in creating desirable gear.