I think there should be joints that would give you more options for movement because while playing I seen that there isn't a equivalent to the ball and socket joint movement that's in the shoulder area that allows to bring your arm back and forward its kind of hard to explain without showing, but maybe it could look like a washer and be located in between the pecs and the shoulder for rotation but its up to whoever is making them if you do, the are more but I don't want to ask of to much.