I know what you mean, but it sounds like you're describing the cloth ,skin, and material graphics/textures. Even though we always refer to them as player models because we see the jersey,hat, etc. on the player, it can be a bit confusing when people talk about improving the models. Are they referring to the skeletal model (proportions), or the cloth/skin/material textures.
It sounds like you're referring to the latter which I can understand and I'm sure we'll see it improve every year.