I'd echo what James said. The only reason I got Dynamis involved was as a GM counter against Tom so that we could get someone out of hot water, also because it's fun.
In SM2 I wasn't a GM, I putzed about with my own guy. Really we could launch right now and just have a ritualized Certamen where you start with whatever power you had at the start with a GM keeping score. Most RP's should be freeform as it stands. James or I would step in if someone went nuts with their descriptions.
