The big thing for Randle, obviously, is how much his jumper develops. I think he's shown signs of a respectable midrange jumper, but if he can start knocking down outside shots, the sky is absolutely the limit for him.
Even if he doesn't become a respectable outside shooter whatsoever, he's capable of being a 12-14 ppg scorer simply because of his athletic ability: breakaways, alley-oops, taking people off the dribble, putbacks. If he stays out of foul trouble
As far as his NBA future and his personal development as a player, Randle's jumper is a major point of concern, but with one of the nation's best 1-2 punches in terms of three-point shooting with Smith and McBride (and with Meacham, who hit over 40% of his threes at Dayton two years ago, and Semrau, it could be an excellent three-point shooting team, period), we don't need Randle to be a good shooter. It's just that if he became one, he might be one of the best players in the country.