What does it take to seed a tango community?

I almost started this post with “what does it take to start a tango community” but think that seeding is probably more accurate.  Starting something often implies it has an end, or that the initiator will manage it on an on-going basis, but seeding something implies that the community will grow and develop in it’s own rite.  Later I’ll write about growing a small-stage tango community, but this post is all seeding a brand new community (I will arbitrarily define a “brand new” community as community with 1 or fewer teachers and 1 or fewer events per month).

I first thought about this topic when I saw Anil, a well-traveled tanguero, post about starting a tango community from scratch.  He had some very interesting qualifications for the community he chooses:

has to be kinda NEAR (but not inside) a city with a medium-large tango community
has to have a medium-large university/college nearby
has to have some semblance of culture/art
has to have some semblance of nature/parks
has to have an average temperature of at least 30-40 degrees in winter

Some of these are certainly personal, but I think the point about proximity to a more establish community, a college, and having a good art scene are very important qualifications.  We often talk about what are the biggest / most developed tango communities today, but we rarely discuss how those communities grew and what was integral to their development.

If you imagined your ideal tango community, what would it look like?  Working backwards, what would one or a couple of pioneering teachers and community builders have to do to work towards your ideal?