I hope they go back to an actual sandbox game. One where a player can start from multiple start locations. The player can just go out adventuring in a somewhat evolving world based on both the characters actions and the events in the world that might be larger than the character.
Lets leave the "epicness" out of the next game. My character doesn't need to be the worlds saviour. I just want to be a plain old standard adventurer but make the world start evolving around actual choices and consequences of actions. There can be some main event happening in the world, but let US decide whether we even want to take part in it.
Implement a REAL economy. Allow me to build my OWN dwelling somewhere of my own choosing. Let me have to hire the engineers and laborers to do the work.
A REAL sandbox game where I can choose my own path and watch the world change with me. TES has become what is typically called a 'theme park' game. This town has this storyline and you can enjoy it, but when the ride is over, nothing has changed. Another character goes to the same town and the ride is exactly the same. You have no options to change the story.
No more theme parks.... make a REAL sandbox game.
I'd love to see this happen when technology finally allows for such a game. Our imaginations and some dice are that technology at the moment. Play any tabletop RPG, and you probably can make this kind of thing. For a game that's almost literally a sandless sandbox, tech that probably doesn't exist yet will have to be made first. Okay, some of the things like an evolving world has already been done in Demon's Souls. I have yet to see a game that lets you make a house anywhere you want, sadly. Maybe such a game exists, but I have no knowledge of.
The wolf simulation game Wolf Quest kind of does a limited form of make a house where you want. The housing is hardly housing, though. Just territory. The closest to a real Sandbox game I know of is Minecraft. I have yet to play the paid for version, sadly. I want to. I haven't played much of Daggerfall, so maybe Daggerfall is more like a sandbox. If it is, tell me.