It definitely appears as though they have made the game a little more realistic. No more getting high paced strikers and sending through balls all game. Requires much more build up play. If you like scoring a ton of goals all the time, I suggest putting it on a low difficulty setting. The medium and higher levels slow the game down quite a bit, takes away the arcade aspect.
It also seems like they made the A.I. slightly less annoying. They don't seem to run around as much, they pass the ball around a lot more instead. It can be pretty difficult to get the ball of them. It is still a bit annoying, but I understand they do it to allow the computer to have more realistic possession numbers.
The one thing I still don't like is the A.I's dribbling ability. Despite the player they are using, they all seem to dribble like Messi, and switch directions, or stop on a dime. I don't mind it too much when the weather is nice and my players get decent footing, but they should not be able to do it on a rainy or snowy pitch. It gives the A.I. a very large advantage if the weather is bad.
I don't think I will be playing the new Draft feature much, cause I don't plan on buying fifa points. However, it is probably a fun mode, I know it was on the demo. I am not much of an online guy. I really like the new training feature though in manager career mode. Allows you to do drills(or sim them). It can break up the long season a little bit.