Please downvote the solution above as it incentivizes transparency, public scrutiny and more choice, while creating a more targeted product with guaranteed success (since it's been paid for and returned profits in advance of its making).
Please go on with your other solutions involving more lawyers and copyright protection schemes. I didn't mean to distract you.
You can't create art that way. (Well, you can, but it will be bad art.)
I'm curious as to why you think that? There are a lot of really great projects on Kickstarter that would fall under the umbrella of "good art" (games, films, etc). Unless you're speaking subjectively, of course, and you don't like what is on offer.
If you look at film video projects on Kickstarter, it's mostly documentaries - for which this model works OK because documentaries are often about something that has an interest group already attached, as well as much lower production costs and quality expectations - short films, which are raising small amounts and generally just using Kickstarter to funnel donations from friends & family, or instructionals, which aim to produce educational content. It's not at all good for feature films. There are some crowdfunding sites that are a bit better but the more friendly they are to features the more likely they are to be targeted within the industry. I laid out some reasons in another post above, I should have mentioned that those are all narrative feature-specific things.
Please go on with your other solutions involving more lawyers and copyright protection schemes. I didn't mean to distract you.