It's lighter than DMC/MGR actually. But it can get some depth with it's customization. And well, it's open world. But I'd say it's a bit more straight forward as you get to each area outside of the central hub.
Dont forget that the game also changes cameras and gameplay styles for side scroller, isometic view, shmup ,etc. The game has variation to it and the demo kinda gave just a bit of hints of what is there.