Without Bron, we don't get Winslow, not too mention Whiteside might not be here. The main reason Hassan got playing time, was since there were no Bron, that meant our flaws from the Big 3 error(size, rebounding) were highlighted more(Granger; Shawne Williams, and Haslem getting major minutes pre Hassan).
Bron leaving was best for both parties in retrospect, we got some assets back in return to possibly ignite another run, and Bron got power. If we had Bron right now, that means no Dragic(hasn't worked out yet, but a better shooter than Bron ATM), and would improve us in the East but not to match up vs GS/SA(we'd be even worse at shooting).