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?
There are a lot of factors that lure traders to an exchange, ranging from the security of funds on the exchange, low fees, and volume. Some other lures could be freebies and some trading competition.