I'd be interested in hosting this, probably jointly. However, I think there's already too many Mafias floating around...the 1/2-day rounds of Speed mafia is too fast for this, IMO, but I think at least part of the problem that hamstrung this mafia was it took a week [or longer] to complete one day. I'd settle for a 60-hour round [that's 2˝ days], if I could ever get on a schedule like that.
I must admit that I would probably suck at hosting something like this, and it seems like an epic idea that shouldn't be screwed up by an incompetent host.