
Into the Khazm
New island west of Kalimdor, 3 new zones in layered tiers beneath the earth
Khaz Algar is not Avaloren
Horde ally with the rebel dwarves, Alliance ally with the cave goblins
Khaz Algar was a prison, Xal'atath unleashed the inhabitants
Elemental customization options for old races
Timewalking Mythic+
Seasonal events to bring people to the old world
Runic augmentation
Archeology revamp
Oh absolutely. The crowd still clinging on nostalgia and Classic (that didn’t bother to check out WoW years later) is way bigger than the crowd awaiting the xth retail expansion.
We know they are announcing the next retail expansion. An announcement of Classic+ would be unprecedented and unexpected and therefore the hype would be waaaaaaaay bigger.
Make Alliance Great Again

You know what? Now that you said it, it would make kind of sense for Northrend full revamp in the similar style Outland was turned Into AU Draenor
Like it's the similar shape, same name, some places are the same but overall with the whole new biomes after lich king was defeated, with Azjol Nerub Underground, Odyn, Dwarves, raid beneath Ulduar(!!!), something beneath Galakrond fall etc.
That reminded me of the revamped Northrend leak/concept I posted in the 9.0 speculation thread way back when. The idea was that it would have been damaged by the Cataclysm, causing flooding (and other changes) across the entire continent. Also I got rid of Zul'Drak cus I hate that place.
Btw, I'm noticing now that I kind of got the location of Uldorus/Tyrhold correct.![]()
Sadly, no one cared for these so called "features", besides garrisons which also got flak. Most of them only got better at the end of the expansion anyways (easier transmog for island expeditions, better torghast modes), which was shortly before they abandoned them. Besides that, the game needs evergreen stuff, not "borrowed power" or even worse "borrowed features". Bring in a glyph revamp, a racial revamp, housing, flex mythic raiding or a pvp reward revamp that gives CASUALS access to elite and gladiator rewards that are older than 2 expansions (to make up for casuals getting their hands on mythic rewards down the line). That's stuff that brings players back and makes them stay. Not some "feature" that you know will get abandoned after 4 seasons.

There should definitely be a lot happening there, too. The Ebon Blade have been fighting a war against the freed Scourge since Shadowlands (still weird that the whole invasion was just ignored apart from that one questline that made it seem like Lakeshire was about to be overwhelmed), and supposedly things were dire there before the time skip. I'd like to see how that's going now, 5+ years later.
We know Khaz Algar is far from Uldaman, maybe it could be an underwater fissure between Northrend and Dragon Isles. The continental shelf completely breaks on the east coast of Zul'drak so maybe that's where Khaz Algar used to be and now most of it is underwater as it fell into the sea during Cataclysm. Imagine if it joins underground with Zaralek and we can fly from Northrend to Khaz Algar, to Zaralek to Dragon Isles. Or simply make it possible to fly aboveground through some mists and skybox illusion from east Northrend sea border to Dragon Isles so if they plant the tree in Ohn'ara it is still right next to the next expac and you can fly back and forth pretty fast.
Do a visual revamp of Northrend, add an Azjol Nerub zone, maybe have Elun'ahir be right next to it and part of the same underground system. For side stories we can have a Talanji storyline where she helps resettle Zul'drak, have the Taunka and Frostborn formally join the Horde and Alliance, maybe more Kalecgos in Coldarra. Heck we could find what those Saronite vapor-like things where that we found in Ulduar during the Legion pre-quests. We'd get all the keepers back as well. Northrend which means more Vrykul (maybe we even find out who the Drust where and why they left). More Tuskar, more wolvar, more Oracles. Continue the dragon story from Dragonflight by moving it into Northrend with Wyrmrest Accord becoming a capital.