With the addition of Mara, what does Sorber’s role become on this team?

Although I’ve seen a lot of talk about sliding Sorber to the 4 I just don’t know if he works there. We have a loaded center room but are rather short on forwards. Playing Sorber at the 4 is just a waste of his skill set unless you’re playing Chet at the 5. Playing him at the 4 with Mara or Hart, as you could imagine, would completely screw our spacing unless he’s been developing his shot like crazy. I really only see him playing when Chet’s on the floor or when he’s the only big on the floor, which makes him rather situational.