7 footers take longer to develop. I think this is fairly well documented.
The ways that Olynyk can improve are all related to confidence and skill rather than athleticism.
Olynyk is already a pretty good shooter from range, if he can sharpen his shooting skills, I don't see why he can't be a threat from range. He is the typical 'stretch 4' which is becoming more valuable in today's NBA. Once KO develops the confidence and aggression to play his game in his role, he can turn into a good player for us.
KO's improvements have been incremental, but those add up.His overall FG% increased by from .466 to .475, his 3PT% stayed about the same .351 to .349, and his eFG% bumped up from .506 to .533. This reflects the fact that he was making more 3 point shots overall while still bumping up his shooting accuracy.
Consider this statistic about eFG, if KO qualified, with .533 eFG he would have been the 19th best shooter in the NBA in terms of eFG, just behind Lebron James and just ahead of Kyrie Irving.
http://www.sportingcharts.com/nba/stats/player-effective-field-goal-leaders/2014/And if KO continues to improve incrementally to say a .550 eFG in 2015, that would put him in the top 10 player in the NBA eFG leaders of 2014, just behind ... Klay Thompson.
KO a top 10 or top 20 player in the entire NBA? No way right? But in terms of scoring efficiency, KO doesn't need to jump higher or run faster. What he needs to do is just shoot the ball better.