I think a good starting point for this idea would be to set up a blog (or mabe a podcast if time and inclination permit) which featured in-depth interviews with people who might be able to signpost some future directions cardistry could take. People who understand what cardistry and non-magical manipulation is all about and are able to relate it to other performance arts.
Charlie Frye is a name which instantly springs to mind. As someone who has a foot planted in both the juggling and magic worlds, and with a long, varied and successful career, he'd be perfectly placed to talk about the nitty-gritty of what goes into getting a niche performance art in front of real people. From another perspective, someone like Michael Moschen would have great insights into turning a display of skill into a truly expressive performance.
Essentialy, I'm expanding on Steerpike's point. The key, as I see it, is to break cardistry out of the insular state it's in at the moment. And the way to do that is to seek insights from other areas of the performing arts. Jugglers get booked and everyone knows what juggling is. So what is it they do that cardists aren't currently doing? A blog which sought to answer this question, and to tie cardistry in with the centuries-old tradition of object manipulation to which it belongs, would probably be a good step forward for the scene.