They were, if used properly. Look, we all know the physical makeup of the 4-5 rotation was missing a bruiser, but it was deviating from the Carolina system that was the ultimate culprit.We had talent last year, it was just terrible coaching. Playing Drake and Ian at power forward should be a fireable offense. We came back in three games in Hawaii and Hubert decided that small ball was our best lineup. Not a change of pace lineup, but our best lineup. It took him another 20 games to realize it wasn’t. Steve Nash was fired for putting Seth Curry and Kyrie Irving at the three and four. Lastly, Yes we were a bit guard heavy but we should have had a 5 man rotation at the 4 and 5 the entire season. The best bigs that game will play. As a rotation I believe they were serviceable.
Go back and look at the 1979 team after Mitch and Tommy were gone. Dean was left with a trio of merely servicable Bigs (one of whom was a Stretch), and a tandem of unspectacular PGs --- so his firepower mostly came from the group of MIke O'Koren (having to play the 4 at 6'7), Al Wood, Dudley Bradley (who was a defensive specialist) and John Virgil (off the bench). Yet SOMEHOW, this underwhelming roster on paper finished 23-6 ranked #9, won the ACC and ACCT vs a loaded dook team.
IIRC the only major adjustment Dean made was giving more ball-handling and play-making responsibilty to O'Koren (incl "Chaser" in the Four Corners), but the system carried the day.