I'd like to see those as well but I feel kind of the opposite where I'd only like to see them implemented with, maybe not extreme but, some kind of detail to make them worthwhile. I don't just want to see them thrown in and have the only difference between them being FA's is you get to give them XP. Some sort of specific team playbook or scheme knowledge rating or something.
Same for the coaching staff. I don't just want to have them for the sake of having them. I want to have them so that they affect and mold my team the way I choose as well as the CPU teams.