No, I don't think there is a need however they should really try to improve the current exchanges that are present and should hire more support to answer all concerns right away.
I'm thinking that there's a need for a lot of new exchanges. As a trader, it's an advantage to have a lot of exchanges in our own choice.
Let them take the competition and beat each others services base on the satisfaction that they can give to the gamblers. I did noticed the lack of supports but not all of them does have a very poor support though.
Sometimes we are just in a hurry and while waiting for an answer to our query, we are rushing it and can't be patient anymore. I did addressed some problems with popular exchanges before and I understand why they are replying late and this is what they should consider.