Ok, my experience this season has showed me the value to overtraining outside d on a guard trainee early in his career. So I updated that part of my guide.
Also, I am starting to see the importance of jump range in some situations. I have had great results this season with my player Pisanu when I run outside oriented offenses. I also noticed that he seems to make the players around him better - Wendon went off with a 45 pt game not too long ago, and it is not like his outside shooting is outstanding (sure, he was up against a player with low outside d, but that can't be the only factor).
When I play a look inside, Pisanu seems to suffer, but I don't think it is because of his JR.
Anyhow, I will just leave it as I don't think JR is completely ineffective past prominent. But there seems to be many opinions out there.
Run of the Mill Canadian Manager