As I speculate on the possibilities for the next chapters and what these locations have to offer, imagine what would be the most interesting story and offer the most potential for content. There is also the aspect of nostalgia and attachment to new players that have to be considered, too; after all, one of the reasons that the Morrowind chapter worked so well was because of its strong connection to Elder Scrolls III.
If we look at the map of ESO as it currently stands, thanks to the Unofficial Elder Scrolls Pages, we can see five major areas that have not been filled in yet. Those areas could probably be separated further, like the east and west banks of the Nibenay Bay. The Nibenay Basin and the Blackwood on the east side and Elsweyr on the west. But those are not the most likely areas to open up next. I’ve narrowed my picks down to three.