This is what I've been dreaming of even more than whatever Obsidian might try to make.
I usually want to see a prototype (technology category) before I pledge anything. This idea of pledging for a finished product that doesn't have anything to show yet usually doesn't sit well with me (anyone can say "Give me money and I'll cure cancer!"), but getting a good reputation is not an easy thing to do. As the Double Fine project showed, having an excellent, established reputation is a very valuable asset.
For everybody else, they'll probably have to put in some time (you better love what you do) making something to show off.
If people can't afford that either, I think another potential way to fund a project is having multiple small projects for the entire project. Like this - http://www.kickstarter.com/blog/guest-post-kyle-henry-on-a-whole-lotta-fourplay