The joy of this discussion is that everything is on the table, especially here in the stages before some idea have gelled together. The few things that seems to have come together at this point I could see are:
-a place to live
-a place to work
-something to eat
-people, who are interested in similar things, so we can share ideas and help each other
(quoting @hr1 in above response)
-maybe something on the goal being around personal growth of members/community

To me the first thing to find common ground on is the goal of the group. With the next focus being on a common vision, which I believe is the current part of discussion. (We're looking for the vision others have, you can see @hr1 's vision in an above reply or what I drew out at some length in the first utopia post of how-to-make-a-small-utopia-and-steemit-might-be-able-to-help. Don't feel it needs to long, any ideas or points are helpful)
With that said, I see there being pros/cons of both centralized and decentralized communities. Since the vision and/or requirements will differ from person to person, requiring a multi-model option. I suspect that we'll end up looking into some split between these two and maybe others.

Regarding the centralized community approach we've had a few models brought up in previous discussion including Tech Squat, baugruppe, and Dont-Call-It-A-Commune. I like the Tinder'esque Communes in your Area idea, especially as it scales up.
In regards the decentralized, interesting questions come up. Does everybody need to be at a physical location to be considered a community? Between the internet, online banking, online ordering and shipping, and other modern technologies we have many outside the box options available for us if people did NOT want to be in a centralized location, have to leave their home/sell things, or other sort of things that some people don't want. There is also nothing to say that a decentralized member couldn't travel and pass through/vacation/visit. This is all still up in the air :)

What are your goals, vision, requirements, etc? Do you think you'd be a more centralized or decentralized sort of person?

Lastly in regards to incorporate 'new blood.' To some degree that's what were doing right now. We are all, on some level, pulling the handle of the one-armed-bandit called Steemit, with in depth thoughts and discussion towards an idea it sounds like a lot of people have thought about but not had the chance to put it together with others with the same passion.

I don't want to speak too much on 'new blood' outside of that, due to the 'marketing' really depending on specifics of the vision, community setup, resources available. Unfortunately, to some degree, the community membership needs to grow hand in hand with financial/resource growth.