Ill jump in on thi if I may. I think it is much better to have two unbalanced bigs. That is why there are players categorized as a PF and some that are categorized as a Center. I feel like the U21 NT would be much better if our PF was a bigger offensive threat (meaning there would be less time spent on defensive and rebounding skills) and then the center can have slightly less offensive skills and pick it up on the defensive and rebounding side. LI is more efficient with a PF who is shaped like an actual PF, instead of a Center that we are forcing to play PF.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs