There is a Korean exchange whose airdrop campaigns MemberPass is working on. I think they have a great model with transaction fee mining. I believe this type of exchanges will be around.
My question is where do the quality traders hang out? What motivates you to join a new exchange?
Quality traders usually standby on those exchange where they can assure that there funds are safe and can easily transfer anytime they want to make a transaction/s. If that exchange will have a better security, high volume in marketcap and many good coins available for trading , then there's no reason for traders not to create an account in that exchange. Iit is uniqueness from other exchange platforms and it's legitimacy can attract a trader's attention.