There are some improvements already made that will become available in the next release. The main thing is the fix for skaters using goalie sticks and vice versa. Another improvement is that it will come with preset backup save directly using the USB controller as an option to using F5/F8. This can be handy for those experiencing the freeze bug in 2KHS. The third improvement are larger modern ads on the boards. There have also been some work done on sliders for shooting, passing and skating but only experimental.
Feel free top pop a comment in the forum if you feel there is something you are missing or would like added to the roster addon.