Man, a lot of people sound like grumpy old men complaining how things were better back in the day. I don't approve of everything the demo had, but 1) It's an OLD build of the game, seriously, I remember watching a video of the same section at E3 last year. And 2) I'd rather Bioware make some changes to the game, and see what works, rather then stick with the same damn game everytime they release something.
That's how progress is made, seeing what works, and seeing what doesn't. I'd be MORE pissed if nothing changed between games, if I want to play Dragon Age: Origins, I'd play Dragon Age: Origins. I'd try the full game out before you condemn it and Bioware to the bowels of hell for a demo that, yeah, was pretty old.