I thought the demo was really fun. I like the combat changes, it's kind of like a blend of Kingdom Hearts and FFVII. I appreciate that it plays so differently from the original, thus keeping the original as a unique gaming experience. I thought Cloud was more fun to play though I appreciated that Barret played very differently and was useful for flying enemies or getting quick ATBs for Cure.
I thought Cloud and Barret were very well portrayed. I loved that scene in the elevator where Barret was spewing his idealisms. I didn't mind some of the story changes, it again just means it is still worthwhile to play the original to see the differences.
My only concern at this point is the episodic nature of these games. The bombing mission played out almost exactly like it did before and took as much time, or even less, than I remember it. Since this first game is just in Midgar (which is about 10% of the whole story? or less?), what do they plan to do to make this a "full game experience"? Also how many of these do they plan to do? Seems like at least 3-4 games are needed and I'm not sure I want to fork out $240+ just to play FFVII.