If Blizzard ever decides in their infinite wisdom to give evokers a portal, similar to how they gave druids two portals (one to moonglade, one for their legion class hall), please make the portal graphics similar to the Valentine’s event portal! Pretty please! It even matches the graphics on Fury of the Aspects, so there’s that, and let’s not forget that mage portal trainers are amazed at evoker’s innate understanding of the magic behind portal making (unlike any other of the classes besides mage, so even from a lore point of view evokers and portals shouldn’t be too farfetched).
Evokers never got a legion class hall and feels very left out in terms of old content. Even if you didn’t give us a portal, but instead tied it to a Hearthstone (sorta like the shaman one, i forget the name) that would be awesome. But remember, rainbow graphics, that’s key!