Karaban can play the 4. And Springs. I think Johnson is the starting 4, but also backup 5 when we go smaller. He is a very good baseline runner and dunker based on his HS tape. He can hit 3s. But as I said, we need another guard and another forward. If Dan sees Karaban as a 4, then that other "forward" is a wing, someone like Martin. If not, then we need a stretch 4, big 3 (like Karaban). Can never have too many of those guys really. We need another shooter with size.
I think we are all mostly saying similar things. We need flexible pieces that can play multiple positions. Some people are interpreting the 4 out as 4 guards and a center. I'm interpreting it more as 4 guys who are 6,5"-6'9" who can shoot at the 1-4 and a center. Some of those guys need a little bulk and/or length to handle interior defense. Who is really playing what position? It's almost irrelevant. I expect Andre to have the ball up top on offense at least as much as Newton.