That whole "sight unseen" issue is why I think kickstarter is an iffy prospect.
However, Tim Schafer just got $1.6 million plus on kickstarter, sight unseen, and I've backed over a thousand dollars on kickstarter on projects that are sight unseen, the highest being $350.
You do understand how kickstarter works, right? It's all sight unseen. Which is why only big names are getting big money in gaming on kickstarter. Wasteland 2 is enough for me to kick in $100. Of course, for $100 I'd get a copy of the game and some other random junk. But I'd do it based upon belief in the idea. And because I like backing shit on kickstarter.