There are 5 Coins in Top 30 coinmarketcap.com list which are not traded on poloniex. Basic Attention Token, Waves, DigixDAO, BitConnect and Byteball. I think its time for Byteball listing on poloniex.
I have a suspicion that Poloniex doesn't add alts from Russian developers as a rule for some reason. I may be wrong though. Does anyone know if there is a Russian project listed on Polo?