It's actually not unreasonable to predict Nico to top out as a 60 point center. That's still a decent player in my eyes. Add in some very good 2 way and defensive play, and you've got a really good player on your hands. Bo Horvat comes to mind when I think of this type. Granted, he was not a 1st OA player, but 9th.
Edit: He might add in a 70 point season here or there, but I expect his average to be around 60-65 pts
Edit #2: See also, RNH. A weaker #1 pick, but still a good, consistent 60 point center, with good 2 way and defensive play. Both good comparables for Nico