I believe Steem and Bitshares can work together. I would like to draw attention to the concept of zulutrade.com. They are really big. It's a so called social trading community. Users pick a Forex trading strategy provider and can discuss all related things. Something like Zulutrade is missing for crypto. It needs to be implemented well, and Graphene can do it. Forex have PAMM accounts http://www.investopedia.com/articles/forex/010715/how-forex-pamm-accounts-work.asp. Let's imagine, on Bitshares you can allocate a proportion of your assets for having it traded, or invest in mini funds where the performance is audited and measured that cannot be disputed/scammed.