It is extremely messy when it comes to Artifact Weapon from Legion.
TLDR: You dont see legion artifact weapons color variations you did not unluck under appearances, thats why its super messy. And it gets even more annoying if you have two of same class (if you changed server/faction).
I have unlocked all of the skin variations and even mage tower base skin, but still need the different colors on my Alliance DH. When i go to appearances ingame too see witch one i do not have, i only see skins and color variations i got. Not the one i do not have, could be really easy added in.
It is the same thing with my horde DH. BUT!
I have to go to orderhall to check all the requirements for the skins i do not have, that is fine. But i need to have the weapon equipped on me, witch sucks, then the artifact weapon stand is constantly rotating the skin i selected where i need to wait before i can see the front. Supper messy when u spend time making a transmog and want to check if one of artifact weapon skin will match it, if u do not have it. Pretty much unpossible to check right now.
On top of that, if i want to check my Demon Hunter mage tower appearance, its locked and says “No Longer Available”. And the skins i obtained on Alliance DH, i can use on my Horde DH, but they do not show, like i have to reobtain everything.
I would post pictures but doesnt allow me.
Today i killed on my DH Horde Mythic Kil jaeden and i tough ill get the green appearance “Flamereaper”. Nope.
Now i wonder if i have to wear the artifact weapon when he is about to die. Or i have to kill him on my alliance DH that i no longer play on + wear the artifact weapon when i kill him. I could not find any information about that anywhere.
And every time i want to see something about artifact weapons skins etc. I always have to look for that information on wowhead or google it up, because there is so much confusion.
Now my solution to all of that would be:
Put all the skins and colors of your specific specc under the “Legion Artifact” appearances. With information where/how to obtain, we already have it when we check artifacts in order halls. Do not show the mage tower one if you did not obtain it on one of your alts, show it with the different colors only if you have it.
Make it possible to obtain colors you do not have on all alts (same class ofc) even if you have the weapon in bank and are not currently using it.
Sorry if i made grammatical mistakes!