You might start with the communities that promote Forge map making.
People with the creative drive to actually produce content tend to gather there.
http://www.forgehub.com/forum/http://highimpacthalo.org/forum/forum.phphttp://www.modhalo.net/index.php?act=idxYour greatest hurdle will be presenting FS2 modding is something virtually
anyone can do.
Ex. If you don't know anything about modding, you can table and learn
that area as it's only txt based. Everyone can edit text, just needs
someone willing to learn and some basic math skills.
Most folks will say they want to help, but figure modding is a dark art
that automatically means you're supposed to code/program, and shy away
from doing anything at all. That's a gap you'll have to deal with.
You can also try and promote what you're doing as getting more options in the
Halo-verse. In other words you're not constrained, it's free form. No silly Forge
rules (in a sense, there's engine limits of course) so it's an opportunity. Ideas
and creativity are encouraged for a change.
Bungie.org's forums may also be a starting point, just for pure advertisement/
word of mouth purposes. It may not be the 1st or 2nd pair of ears that nets you
a helper... but the 3rd... people talk.
Your most time consuming problem will be content creation (models+textures)
as making a universe is a labor intensive task. The more modelers you can
get or make things assembly line style - the faster you'll go.
Start a FTP everyone can access, and it'd help to have your own SVN for tracking
changes and so on. Somebody do a backup once in a while in case of disaster or
disgruntled contributor.
Besides the novels, there's also the well laid out editorials of
http://blog.ascendantjustice.com/halo-3/the-terminals/which I find few average Halo players know anything about.
Nice source material to pull from if nothing else.
/my $0.10 of advice.
Best of luck gentlemen. FringeSpace started with 2 guys that knew nothing
and we're almost at year 4 with a staff of 8. We've "restarted" in a sense more times
than I care to think about - so I know where you're coming from.