I'm disappointed to say Poloniex (Busoni) has not responded to me so far, I saw that others had contacted them too. I think we may need a bit more volume to get them to put in the effort. So first step is still the Multipool for automated buying of QBC.
Although it wouldn't be my first choice (actually it's my last choice), maybe consider CoinedUp, Atomic-Trade, or Austin Global Exchange? Someone here brought up a good point that arb trading is one way to bring up volume. I know the Noble coin dev liked using the Austin exchange after CoinEx went under. They sometimes run promos for discounts on specific coin trades too. Personally I never used them, and barely used the other ones I listed. But something is better than nothing.