I will stick to Livecoin.net and Cryptopia for now to trade rare cryptos. It sucks because Bittrex got the most volume, but I dont see any other way out.
sadly i am currently looking for a replacement, i should try livecoin since i have never tested it. but cryptopia is my current choice. although you are right these other exchanges are too small with low volumes, it makes it tough to trade.
i actually was searching more for "decentralized exchanges" these past days. not been so fruitful though.