The ease of use to create your own token, as well its compatibility with other platforms like Bitconnect or Bancor for example makes it one my favorite exchanges! I have never had an issue while using this platform so far but i can't imagine anything they could improve upon at all since everything works perfectly fine out-of box (in fact you don´t even need any knowledge about cryptocurrencies).
This exchange has been perfect during our development process which was mainly focused into creating new tokens such us EOSCOINs/ETHCoins etc., We are currently looking towards integrating some payment solutions via their API's too see how easy would be implementing them together withe element 42 Token Solution.