Why does blizz not utilize cosmetic glyphs?

RIGHT?! I used to just be transparent and sparkly. Then we got the Solar form ability, so we were yellow and sunfirey and transparent. There are so many options and yet here we sit with Scooby-Doo ghost blue. :sob:

They actually REMOVED choices for Warlocks. It’s a few recolors, two reskins and the deletion of the Observer. I am not a happy camper about that.