I left Poloniex long ago after they disabled the Trollbox. They are also horrible at managing their Steem wallet. Binance and Bittrex have both been great with Steem in comparison with Poloniex overall. I am not sure if you saw this https://medium.com/faast/how-to-make-effortless-cross-chain-trades-with-a-trezor-wallet-50f6e85fe923 - I am going to take a look into this a bit more myself. Will be interesting to see how this is used, it could be a game changer. Not to mention many other innovations coming in the decentralized exchange space.
RE: Poloniex Freezing Unverified Accounts: Get Your Funds Out Now If You're Not Verifying!