well, i've been wanting to do this; and i've asked around also: all we'd need is a fresh map to start with: just about ANYone can be a "director" of a new colony-type level, as long they can tell me where to put beacons, units etc.. and what to do about disasters. The programming is not too much of a hassle when it comes to putting static things onto the map (eg. no real AI units)
as for renegades, i've been putting it off for a couple weeks now, coz i've got a new business going, but i will update the missions from time to time. Right now mis3 is beginning to take shape