not sure if we will poloniex but it would be nice to be back on BITTREX , we were there until fairly recently, and despite an increase in trading and user base, BITTREX reason was a' lack of user interest' , TESLACOIN would appreciate if you asked this question to the admin of BITTREX on their support address . support@bittrex.com .
We are releasing a new wallet soon which will be a mandatory for all users and we hope to spread back to the main trading sites.