Okay a couple of ideas for possibly getting more members, but I was unsure of where to post so putting it here.
First
Having a larger scale set of RPs designed around having a good number of players.
This of course would require a good number of players, or a good bit of commitment from those we do have. I think having a long running, consistent RP would help give us credibility as an RP community and would give something for new people to join that has some history.
I'd be up for being a primary GM though I'd like it if we had a couple to help in case one of the GMs can't be on at one time or another
Second
We have a steam group, why not try and be a gaming community. We have people interested in all genres pretty much, and we can organize events to get together on the steam group and here. We could also make a division or whatever its called in PS2 since we've got a few people here who are into the game, and then grow that.
EDIT
On the steam group
If people think it's a good idea to try and make a gaming community with it then I'll start wearing the tag in some games and trying to recruit for the group. I'll also try and run a few events in games that I do own (probably payday 2, unturned, Planteside 2, Star Bound, and Dying Light, Company of Heroes 2) and I'd like ot have a few people who have games in other genres who'd be up for running events.
On The PlanetSide 2 guild
I'd either make it or have someone else here make it and then start recruiting for it. I'd also like to get some of us together in a squad and move around, as that might give the recruitment drive a bit of legitimacy. If we do this I'd like to get with whoever is in charge(if I don't make the guild) and set up some guidelines and rules, essentially how we expect our members to conduct themselves and what they are and aren't allowed to do.