Obsidian Armor Gem store
Every proff had it’s own obsidian armor… and even, every gender had it! Here would be too much combinations… mesmer had 2 obsi armors, elementalists… ANet wouldn’t create so much armors, I guess.
I suspect for Anet the more important thing for them right now is to provide more and more content to the game rather than simple have some artiest to plainly add more armor skins into the store.
However I believe they are doing things in parallel so just be more patient more skins are coming to the store for sure.
I wouldn’t mind to have 100s of skins available for choices.