You know what'd be kind of cool, chasing that line? Bringing back and updating the idea of microdungeons (like the elite troll area in pre-Cata Hinterlands, and the old Fenris Isle, among others) where you have areas full of elites, that play for all intents and purposes like outdoor dungeons, and end in some sort of indoor stronghold with dungeon bosses and chests for loot that have a daily cooldown (and use the phased chests like in Draenor, Broken Isles, Argus, and Kul Tiras/Zandalar where you get your own specific chest to loot) and dungeon gear.