As each exchange gets hacked my thought process is not if but when will be the next. Having traditional exchanges where people are the true back-end does not seem like the answer for Bitcoin and cryptocoins in general
To be fair I have not given Bitshares, etc a fair shake and can't give an intelligent review of it but it seems that for Bitcoin and all crypto to move forward the only way for it to really work is for decentralized trustless exchanges to handle the transactions. They are the only incorruptible solution because as we have seen, traditional crypto exchanges so far have a miserable track record.