I haven't seen Stone play, but I'm getting a Jared Sullinger vibe from the comments I'm reading here. Based on the description - skilled, polished, not overly explosive - I'm not sure we've ever had a player like him here. The last big highly ranked big man to commit here wasn't a roaring success, but he was a completely different player than Stone. Okafor didn't really become a reliable back-to-the-basket threat until his junior year, and even then, it was never the best part of his game. Thabeet and Oriakhi were never particularly skilled, and the '99 and '14 teams used more of a center by committee approach (though that's probably selling Jake short).
It would be really interesting to see what identity the team would assume with a player like him on board. Would it still be a guard-dominated attack, or would Ollie adapt? My bet would be on the latter, but it hasn't traditionally been the way we've played.