I want them to do Black marsh next because Argonians are the most interesting race IMO and because black marsh is just so mysterious.
That said I think its more likely they will do Elsweyr though. I say that because in skyrim there are many many many books that detail things about the Khajit and their homeland. I remember looking through a book that detailed many of the various legendary heros from each area. It meantioned Morrowind's Nereverine, Skyrim's dragonborn, and then Elswhyr's hero which was the Dro'zgagh or something like that. There wasnt any detail in what that hero was or what they were about, it only mentioned them by name (and Im sure I butchered the spelling). There are also a couple of books that talk about first hand accounts from resistance groups (presumably fighting the empire) and their philosophies. So right now because Elsweyr is just more detailed I think they will do it first
That said I think its more likely they will do Elsweyr though. I say that because in skyrim there are many many many books that detail things about the Khajit and their homeland. I remember looking through a book that detailed many of the various legendary heros from each area. It meantioned Morrowind's Nereverine, Skyrim's dragonborn, and then Elswhyr's hero which was the Dro'zgagh or something like that. There wasnt any detail in what that hero was or what they were about, it only mentioned them by name (and Im sure I butchered the spelling). There are also a couple of books that talk about first hand accounts from resistance groups (presumably fighting the empire) and their philosophies. So right now because Elsweyr is just more detailed I think they will do it first