I think the problem is pretty clear ... Kickstarter optimizes reach so that the teams that are best at marketing win ... A team that's brilliant with engineering and design but can't produce slick photos and catchy videos doesn't stand a chance.
I tend to think that kickstarter is a fad and that if it survives at all, it will be in a much reduced and much more controlled form. How long will it be before the authorities decide they're complicit in a fraud?
EDIT: The ScanBox project looks like something I could make for $5 in parts and have fun doing over in an hour or so.