I see a huge improvement for from last year, although i have only been playing for a year. My ballstrikes are much more consistent and slicing ( which used to be my achilles heel ) have been reduced to only my driver and hybrid, and the % of good shots i have with those clubs has been increased as well!
Chipping and putting is still a bit iffy, i really need to work on my longputts and distance control. But overall i have seen a big improvement, which my index will tell, from 36 early this may to 23.2 right now.