I will explain why NLG wont be added even if 1 million people request and reason they dont take btc because Polo is base around XMR doing well and not other coin. They rather add coin that have no hope of being better then xmr. Gulden have to build own exchange or even btc38 which is indepedant like bittrex.
Disagree. Poloniex has proven to be quite fair in adding coins. Just a few of the coins that would not be on Polo if your statement was correct: Mariad, Bella, Digibyte, Pink and the list continues. Lets go through the process and see what happens. I like Polo and I like the interface and the way it works, so do a lot of people...
I think there is some hidden agendas when it comes to exchanges and I want to be proven wrong. byc has the same problems although some people say they use trading bots to create there volume. That list you mentioned mosy of those coins are dead in the water.
I will put in a request but I fear Kenchanyu is right.