Has poloniex refused to list WAVES?
Yes
any possible on poloniex in futrue ?
Maybe not, sasha cursed ETC as scam, shitcoin blablabla on twitter everyday, and claimed polo would have legal issues to list ETC, lmao.
I think it is unlikely to hear a definite "no" from poloniex ever. So, only the polo guys know whether there is still a chance or not.