Maybe someone in our community knows deeply these coins, so we will be able to know what are the common features of these coins (if any). with such info, we maybe can find a Crypsy's important consideration (based on these features), and even a consideration of further exchange sites once they adopt new coins
Thanks Mati, I don't know off hand what reason they chose those specific ones. I'm sure there could be any number of reasons. I know Poloniex is looking for new and innovative coins. Bittrex was looking for popularity and social media. Most others wanted new coins for their immediate volumes, and others stuck with the voting list winners. Hard to say for Cryptsy, it used to be voting list winners though, now I can't say.