I used stats pretty much the same way for offense/defense based on equal possessions over 3-4 years. Recruiting on 4 years of how many 4-5 star rated players recruited on the roster. I agree the Scouting and Player Development is the most difficult. That's why I weighted the NBA players with W-L records as I haven't found a way that I'm totally satisfied with yet. The data just can't be found easily on the net. To bad there's not a site that had that kind of data. I felt W-L in conference was OK for scouting but not perfect.
I did purchase a stats subscription to do the players that gives me a lot of data on where they take shots and how much they drive so that will help me with them. Need something like that for coaches.
I hope to move on to the 2017-18 season if people like this mod well enough.
FYI the mod is released!