We don't know how Rock's development is going. We do not know if he is going to be a 5 min guy or a 25 minute guy. Billiew seemingly has a long way to go before he is considered good enough to really help out. His footwork needs work, his hand eye coordination is not the best right now. We need help on the front line to get as good as we are now so I think we actually need to bigs. Plus, injuries happen, look what happened to Ward, it cost us a couple of non con losses and probably a one seed, you have to compensate for potential injuries.
At guard, we have the big 3, but I think Pierce will play next year, he is a big and physical guard with good handles. Nojis will help too. We are set at guards, enough that if an injury happens we will compensate.