Kispert is a bad example for sure
but the reason I opted for a smaller age adjustment calculation is I believe it can be off-set by two things:
1. Athletic talent or physical tools
2. Production
I think there are too many instances where a large age penalty would have really lead teams to make some bad draft decisions.
Steph, Lillard, Draymond, Butler, Klay.
Just off the top of my head.....4 of those guys are what? 4 of the best 20 players in the NBA?
There are 20 year old darlings like Brandon Knight who always get drafted ahead of guys like Kemba too. When guys like Walker go on to be top 5 players in their class but are less sexy as 21.5/22 year old rookies.
I think age is similar to athleticism......where it matters in situations where prospects are close. But I have yet to see evidence that age closes even moderate gaps between prospects. Maybe that data is out there though.
In my stuff.......guys who are young that pan out as All-Star types,
had good profiles as well.
Russ is the one true anomaly. But if you look through the pantheon of young prospects......these are not really developmental guys in any way. They all profiled well, in addition to being young. There are just so few examples of guys who were really raw, didn't produce and and developed. Every year, those are the guys in the 5-8 range that teams continually whiff on. That is why I largely think adjusting for age in any sort of meaningful way skews the results too much on older guys. Impact just generally seems to be a good future indicator.....wether a guy is 20 or 22.
I guess I would believe more in a more heavily weighted age calculation if you didn't see results like the above. Where all of these really young guys are already bubbling up without a large boost from age adjustment.