I'm just gonna say it - I'm jealous of your maps, and always have been.
There. I said it.
I'm very interested to see another take on K'aresh and what it's like both pre-Void destruction and in its current state. The Dunes of Na'karat with the concept of the Lightstorms seems interesting. It seems obvious in hindsight, but if unfettered Void energy can be harmful and destructive then there's no reason to assume the same is untrue of its opposite. The Light could have its own geography and dangers just as the Twisting Nether and the Void do, and a region where they intersect with elements of material reality/Netherspace could be spectacular. I also like the aesthetic the artwork for the Forlorn Canyon suggests, with huge carvings hinting at the achievements of an ancient race that have now fallen to ruin.
Also like the concept of the Forges of Infinity - I loved Ulduar and the Storm Peaks with the vast Titan complex there, I love the idea of huge zone-spanning cities and machines, the ethereal could be spectacular. Particularly if some evil reality warping force is pouring into it and twisting the machinery into something truly unnatural.
I'd love to hear about ideas for creatures and other sentient races that may have lived on K'aresh, and what form they have now! I'm also interested in the constellar angle, Harbaron in Legion really got my mind buzzing about the lore possibilities of the constellar.
Also
*imagines WoW-ing as basically Lt. Morales*New class: Tinker, a mail-wearing hybrid class with 3 specializations: Demolitionist (Tank), Scrapper (DPS) and Medic (Healer).
*smiles to death*