Kids are probably more athletic today, but I don't think they're better than they were years ago. The money in the nba is so big, guys that aren't really ready are bolting. Tatum is having a solid rookie year at 14 points a game, but Josh Jackson is averaging about 10, and Kennard is at 6 points a game.
Elton Brand's rookie year was 20 points and 10 boards, Grant Hill was 20 points, 6 rebounds and 5 assists. Laettner was 18 points, 9 rebounds and 3 assists. Ingram had a solid rookie year at 17 points and 7 rebounds.
I think maybe 5-10 guys max are ready to contribute after one season in college. I can't blame them for leaving for the $$ though, but until a rule of some form changes, this is what we will deal with.