My ideal exchange already exists and it's Cryptopia. If only they would decrease the amount of withdrawal fee then everything is perfect. If only Bittrex does not force people to verify their accounts or remove the verification process then they will be the best ideal crypto exchange for me.
I also bet to cryptopia, it is one of the good exchange sites in crypto currency industry. Moreover I also choose Yobit and Cryptodao, the list of coins and altcoins included to this site are higher price value. I think if we invest in this exchange site we will earn much income.
Definitely I have some numbers of altcoins in this three sites I still hold it for now because I expect good amount back into my wallet.