I think those who can't participate in as much will probably pick and choose their battles? Better to have enough content for the most active posters, IMO, if I had to roughly game out the system. And also, of course, as much involvement as you yourself can handle, Crash! Don't burn out for our sakes. :0 But yeah, personally I'll probably limit myself to two scenes I'd update at my daily-ish pace, and maybe one or two extra if slower updating isn't minded.