I would say that maybe 10% don't care about listings. Also some projects plan to do it but can't tell when will it happen. Anyway with Idex and Fordelta it's possible to sell almost every coin.
yes it's true if you want the best just etherdelta and idex but that doesn't have a good impact going forward if it's just a list there big projects are definitely looking for big exchanges and that requires time and commitment from the project maker.
Well i believe that all bounty tokens can be sold, but the most common thing that is always going to happen after bounty is the dropping of the token price. And the token that we can get is almost worthless, so who wanted to sell when you can get only a token that is equivalent of 10$ from your 9 weeks of working berry frustrating, some other or project token are also didn't have a exchange yet and we cannot really sell it we need to wait a couple of months or maybe years to sold token.