Agreed. It's very unlikely it will contain many new features already not shown in the demo.
People thinking it will contain other play-mechanics and what not, are in for a disappointment, no doubt.
However, what is *not* unrealistic to expect, is that they will also clean up the remaining bugfixes to a large degree. I mean, it IS (at least for PS4 and XBOX1) a new, paid-for game, after all. Some bugfixes may be expected. And a lot of them have already been discovered and noted (and even mod-fixed), so they just need to check them out and apply the same fix. A lot of them can be found in the Unofficial Skyrim Legendary Edition Patch.
Bethesda, please: AT LEAST fix the quests mentioned in there, and the objects/items that were intended and should have been in there, but aren't. Nothing worse than quests that are broken or don't make sense, and items that are already there and can be extracted through console-commands, but aren't to be found in the game, when they clearly were intended to be.
It's already IN there, it just needs the correct triggers. Which means only minor work that needs to be put in, and yet a fairly large satisfaction with customers.
One of the things that really irked me, was the absence of the Ancient Falmer Crown, while it was more than obvious it was meant as a drop from that ice-elf one vanquished. It's already IN the game, and you get all the rest *except* that crown. Yes, I got it through console-commands, but that's not the way it's meant to be, and it's breaking immersion that way.
I really, really hope they'll look into some of these bugs and fix them, when they release the remastered version.