User:SirWeltschmerz/sandbox/baseless speculation

Still unknown / unused / not explored fully (established*)

Azeroth:

• Return to Kezan (maybe lost isles?)
• Zul'Dare
• Re-use some BfA islands like Crestfall
• Zul'Aman as a proper zone / secret underground city
  • VOID TROLLS VOID TROLLS VOID TROLLS
• Stratholme / little area above it
• Dalaran crater and Alterac just sitting there empty
• Balor
• Caverns under Northrend
• whole sea around Ironforge to Stormwind (where Deathwing was originally going to pop up from) around tram
• Maelstrom / islands around Maelstrom like Makura place / adjacent to Naz'jatar
• Waterlands (abyssal maw raid)
• Tel'abim, of course

Planetary / Twisting Nether:

• K'aresh
• More floating shards of Argus
• More floating shards of Outland (e.g. spires of arrak)
• More floating shards of Mardum
• Moons
• Husk of a titan planet (e.g. Norgannon's planet)
• Elunaria
• More of Titan Pantheon place (gotta be more than just "Seat of the Pantheon" maybe like a spaceship?)