ZOS, if you are reading this this is what me and a lot of other players want.
Vvardenfell: Huge zone with a new trial, public dungeons and group dungeons. Dunmer themed sets and plenty of nostalgic locations. I'm looking at you Balmora. (ZOS, please make a dungeon/trial in the red mountain)
Murkmire: Huge PvE AND PvP zone. Just like an Imperial city. It would be hella fun to fight against other players while fighting a world boss. And it doesn't even need to be alliance based, but it can be a murkmire quest based like choose a faction that wants to take over murkmire and fight for them in PvE and PvP.
Clockwork city: Make it an expansion to the main storyline. A massive underground Dwemer style zone with a group and a public dungeon would be awesome. Like a coldharbour zone.
Spiral skein: I heard this has something to do with mephala hating molag bal so this zone can be another extension on the main storyline. Can be another coldharbour zone after or before clockwork city.
ty zos