I want the game to be like the other TES games and they aren't Sandbox.
TES is VERY much sandbox.
Sounds like there's two definitions of "Sandbox".
Sandbox refers to any game that's open-ended free-form of your choice of what you want to do. A literal "Throw you into the world and do what you want" concept.
I've heard a few people today talk as if they think that "Sandbox" solely refers to some player-generated content-based construction game like Second Life. I assure you that it is not.
If Grand Theft Auto III was the game that made the term "Sandbox" popular - then Skyrim is sure as hell also "sandbox".

So - in regards to the OP:
I definitely would like a mix of both, but focusing more on the sandbox elements (do what you want) as opposed to something rigidly pushing you into one form of gameplay aspect at the end of the game.