Without that option, they need a little more scoring from his role though they seem to play a lot better with him on the floor regardless of whether he contributes to scoring or not (which was something he showed a lot at Pitt).
Brad is a good role player for a contending team. That is his niche, where he fits, at the NBA level. If he ever found himself on a rebuilding squad, he could be a savvy vet but I think his playing time in that scenario actually should not be as high for the most part because that type of team likely needs younger players soaking those minutes to potentially catch upside and his ability to lend to continuity does not mean as much.