After some serious fence-sitting I've decided to do what many have been asking for: Adjusting Shot Quality, and therefore Expected GF%, by the player's previous shooting% record. This means that Exp. GF%, shot quality and all the other statistics that rely on that model to predict shooting percentage will be stronger, as they don't just use the variables of the individual shot as previously was the case but also his shooting% from the past 3 seasons, if applicable.
In the player and team stat pages, you can now compute statistics for multiple seasons at a time.
Enjoy the updates! Much more to come.