Professional traders would love to use the Bitshares DEX, however it is not supported by the very popular trading tools such as the Coinigy and TradingView. The DEX wallet interface is not sufficient for the professional trading, so the high volume traders must still resort to using the Bittrex and Poloniex. I think that the Bitshares team must focus on collaborating with the trading tools providers and promoting the exchange platform with the targeted Google and Facebook ads. The Bitshares platform would be so much more popular and enjoy much higher liquidity much sooner if some money were invested into these relatively simple efforts.