I think the formation of such a community would be interesting from the standpoint of understanding our differences better, for a few reasons. For one, it would make a good test of the sentiment that (to paraphrase Dr. Tony Attwood) "We don't suffer from Autism, we suffer from other people". Given enough time away from the societal pressure to communicate in "NT-friendly" ways, I suspect a group of people on the spectrum might develop a subculture or manner of communication that is far more compatible with the way we're wired, perhaps allowing for people to come out of their shell a bit more.
Furthermore, this hypothetical subculture would better illuminate how certain traits work for us, socially speaking. If I had to hazard a guess, I would think such a subculture would be nearly devoid of power games, manipulation or double-talk; everything would be straightforward and laid bare. However, it might not be the most cohesive group, as we tend to be somewhat individualistic in our thinking; that is, it's not in our nature to accept an idea based on popularity.
In addition, lately I've come to think of being on the spectrum as something that is as much a gift as it is a curse (of course, I can't claim to speak for others - I realize that some may struggle to be self-sufficient). Moreover, I feel that the positive aspects are not as well documented as the negative aspects are, for the simple reason that psychologists generally don't go out of their way to try and treat advantages. Such a community could very intentionally study some of the subtler advantages, as well as try to find strategies for coping with the downsides. I have begun to suspect that mindfulness meditation might be helpful for dealing with meltdowns and deficits in executive function, though I lately have had trouble sticking to doing any one thing with any regularity (see:executive functioning) so I have yet to establish a set routine of meditating... That said I have picked up several techniques for calming down, which have helped immensely in stressful situations I've recently found myself in.