I have spent a lot of time researching Bitshares. While I'm no finance expert, there is one thing I am convinced about: Bitshares is complicated.
In an attempt to make the concept accessible, one is told to think about it as opening and closing positions in a never-ending futures market, where there is no requirement to take delivery. Bitshares is an extrapolation of what is known as a prediction market, a concept that has been around since the 1940's. But Bitshares is not a classic prediction market, which is defined by a specific point in time when the game is over and the winners and losers are known. It is an extrapolation of the prediction market -- a substantial and likely unproven extrapolation. That's why the red flag is raised for me: Why hasn't the Bitshares model been implemented on a centralized exchange at some point in the past 50 years? The presence of an anonymous, decentralized exchange is NOT a core requirement for the concept.
Warren Buffet will not invest in anything he doesn't understand. I'd advise anyone who is interested in investing in Bitshares to think it through very carefully and convince yourself you know how it works and that the market will accept it.