To be honest I think Olynyk is a pretty rare talent - a 7 foot guy with very good post skills, a good jumper (with genuine three point range), excellent passing skills, great coordination (hands and footwork) and the ability to grab 9 - 10 rebounds a game. There are very few guys I've seem over the years with that type of profile. Troy Murphy? Brad Miller, Dirk, Rasheed, Keith Van Horn. All of those guys turned out to be good starters at worst and All-Stars at best.
I think we'll find Olynyk will also fall into that type of category. For a guy who is as skilled as he is at that size, combined with his highly coachable "team first" attitude, I think he will become a quality starter at the PF/C spot for years to come.
I think the minimum you will see him average (if he gets starters minutes) is around the 15 point, 8 rebound, 2.5 assist Mark. That's a pretty good starter at the 4 or 5.