Disenchanting, scrapping or vendoring a gear piece that is not soulbound should automatically add that item to your appearance collection if the character is eligible to collect that appearance.
As it is now you have to manually go trough the gear you want to destroy and check which appearances you already collected, equip and than unequip all the different pieces before you destroy them.
This would only be a quality of life improvement and have no effect what so ever on the game as you are already able to do this manually. Hopefully other people here support my suggestion.
If you can equip it then why not do that with every item before you destroy it, it’s couple of extra mouse clicks. Pandering to laziness is not something Blizzard do.
One more thing, suggestions are made ingame not on the forums, this will not be forwarded by the Blues.
Thought it was in the default UI, but must be Bagnon telling me which apperances I have and don’t have then.
I get a blue text under items. It either says “You haven’t collected this apperance”, or “You have collected this apperance, but not from this item”. If I have the item, it says nothing.