OK, as far as speculation goes, let me start with the most simple question for potential discussion: What gives MSC it's inherent value? Or, putting it more bluntly, "why should I believe this protocol will raise in value"?
Say Mastercoin didn't exist for a moment. Please consider: What might the value be to a market may be if there was a money protocol that would allow a trustless, distributed way of creating contracts, betting, distributed exchange, smart property signatures, etc.? No middle man, no associated costs with such a middleman, no associated trust necessary of a middleman. This would be like what bitcoin has accomplished, but just at a higher functioning, higher capability level*
*Assuming the logic for all the features are sound.