Pyandonea for sure.

Pyandonea could be interesting. There are a lot of Sea Elf assets already to be found in High Isle and Galen, so it wouldn't be difficult to expand on that and make a series of islands for us to explore. All you'd need is some competent writers to create a story.

I have always wanted to visit Atmora, but after "The Great Frost" that made it completely unlivable, it is now so cold that only Sea Giants can live anywhere near it. The last ships of Atmorans that arrived on the shores of Skyrim were filled with frozen humans, so even If we could safely navigate through the sea ice, we'd need to possess supernatural protection from the cold once we got there.

Akavir is an interesting choice. We already have lore about the races that live there and a basic description of at least the western geography where the Empire landed and established two cities. We could start there. I can see us visiting some day when we've exhausted all the potential zones in Tamriel.

Yokuda likely doesn't exist anymore aside from a few small islands. According to legend, most of Yokuda was destroyed in a cataclysm and then sunk beneath the ocean. This corresponds with the final Ra Gada migration, and there have been no migrations since, probably because the place they were coming from is at the bottom of the sea.

Im all for atmora,
I didnt bother choosing akavir as the way i understand it, Todd Howard has strictly forbidden visiting Akavir and has strict rules regarding anything else akaviri in general.
But i think if ESO ever does go to another continent, it will most likely be pyanodea as there is a lot of maomer presence already in game. Yokuda is beneath the ocean last a remember, but regardless redguards are my least favorite culture/race/lore/history in game. Michaels Kirkbride’s comments regarding the redguards and his reasons for writing them in game are plain and simple racist.