I went with competitive league and planetary league, as well as a 1v1 ladder.
The way I look at it, we can do pick up scrims for the unaffiliated of the community, to give them a taste of what organised play is all about. Also, the 1v1 ladder will promote individual player skill and give the individual something to do without needing to find anyone else to play with or having to deal with putting up with a unit.
I say leave the team based stuff to the units, as overall the organisation that comes part and package with these units will make the scheduling and playing of team based games a lot easier to schedule and manage, and give a clear distinction between the different league teams for all to see (eg "Oh look theres some CHH guys, i've heard theyre doing really well in the league this season, i'd love to get in on that, maybe I should talk to them")