Well, the entire demo was only showing off those very elements, so its impossible to list a wealth of improvements such as passing, route running, pass defense, Crowd, commentary, sidelines, presentation etc.. you're question isn't possible to answer based on what we've seen so far.
So yes, with the limited demo, I will say that the footplanting and running animations are huge. And we all know this. They showed off a much better awareness among all players and thats undeniable. Even the ball carrier sheds his own blockers to remain balanced through holes, defensive players showed much better pursuit angles and breaking down to prepare for hits and tackles.
Weight distribution looked to be much improved as part of the footwork.
Obviously its an improvement graphically, and even that was only shown in a limited space, because it was so bare bones.
I get it, I know why people are skeptical and refuse to have any optimism. I can see it in your response that you have a closed mind to the entire thing. You're looking for improvements to be shown in elements of gameplay that isnt even including those elements in the demo.
I just have a little bit of optimism and a realistic expectation that it isnt going to be a watch dogs type debut, but it certainy isnt going to be a port either. It's a new game.