These are great points man and I can agree with them especially the part about an effective defense being built in the game. And what I'm trying to say here is by expanding the control and putting more effort into stick skills you will have that defense you want.
In real life what allows people to play defense is the fact that they can do so many things to stop a player from scoring. A lot of the problems in these games now is they don't give the player enough options to work with.
As you expand controls which EA is trying to do by doing things like separating the body you give the player more ways to play D. And that is what will ultimately allow EA to weed out cheesers b/c they are providing weapons to prevent it from happening.
Adding in some rating or animation wont be enough if you don't have a way to control it when its needed.
And onto your point on the new shot stick I understand and you're fears are definitely legitimate. But I just have some hope that EA is going to do what they can to make it so that the game is easy to pick up and play but not so much that you will be able to turn terrible shooters into great ones.
I also can't see this EA team just saying hey lets make the shooting extremely easy to master. I'm sure they are doing what they can to make it almost impossible to hit 3pters with Shaq. Pared, Hoosier, Sovartus, P-Dub, have described the guys at EA as basketball guys.
So I'm sure they want this game to be as realistic as possible. But I'm not going to sit here and blindly say they are going to get everything perfect. You could be right but but I'm just gonna believe in the team and stay optimistic.