If I’m honest with myself, I feel like there’s a glut of fast-play systems going right now, and I personally am finding FFOT to be a fine compromise. On the other hand, I have access to larger game groups so if we wanted divisional play we’d set up in teams and play over several sessions, if necessary. I value the granularity of the system and scaling up of down doesn’t bother me very much.
That said, it’ll be interesting to see what you come up with. It might be worth trying the system prior to tinkering too much though – it seems very structured and pulling threads might take it apart. The Commander System is more flexible for this kind of conversion I think.