To be honest, I'm not at hyped for this Sun and Moon Demo. I simply (from my own experiences) found the ORAS demo to be extremely boring and not even like Pokemon. I suppose it was because it was more "mission based," but having the same environments and tasks probably had something to do with my dislike for it. At least it looks like the Sun and Moon Demo will have varying, more interesting locations.
Still, I don't really care how fun or terrible the demo is. I just don't want to see all of the Pokemon datamined from it.