The minutes crunch at guard is going to stink. I agree someone (maybe some two) will likely be moved. Yet I could see Ainge going into October overloaded, and the odd dude out quietly and politely asks for a change via his agent.
I could see a 3-guard unit that includes Fultz (the big pick) and Rozier (cheapest), plus a stopper. Smart is cheaper, but Bradley is not only my binkie, but the most complete player of the bunch and yes, could start as 4th 5th man on a contender. Smart couldn't with his lack of offense; I'm not too high on his ceiling being much higher. But if Brown projects to start at SG, maybe Smart works.
Crazy if IT and Bradley end up on the outs. I couldn't see that one this summer though. Fultz/Brown with Rozier/Smart off the bench works for me.