Dreamworld: Great, enjoyable plot direction and story in general.
Realistically: Great, enjoyable character dialogue and characters in general.
Also: More than one villain, both/all of which are interesting and there from the start. None of this surprise final boss bullcrap.
And definitely: A big world with fantastic areas within it. I know it's a fantasy based on reality, but I really do want to see some "natural" wonders.