It seems like Poloniex re-enabled STEEM/SBD transfers about 12h after my last post, Big thanks to everyone that helped in the background!
Warning, I tested sending SBD and they were not credited to my Poloniex account now +12h later.
This might be temporary, will monitor and update this post as there is progress.
Thanks Poloniex, unfortunately we still do not have any official representative posting updates here on Steem.
Alternatives:
BlockTrades https://blocktrades.us/
Shapeshift https://shapeshift.io/ (STEEM Unavailable)
Changelly : https://changelly.com
Bittrex https://bittrex.com/Market/Index?MarketName=BTC-STEEM
Livecoin https://www.livecoin.net/ (low liquidity at this time, No SBD)
HitBTC : https://hitbtc.com/exchange/STEEM-to-BTC (low liquidity at this time)
Compare volumes at : http://coinmarketcap.com/currencies/steem/#markets