Whenever a person wants to launch a project, he/she must deposit a minimum stake that will be refunded if the project founder provides documents that add transparency to the development.
I like the idea of having some form of collateral. There should be consequences for failing to deliver, unlike now. However, as long as the funding is greater than the collateral there is still an incentive to try to scam people. Regardless, it is still a great idea!
RE: Here's an idea to fix Crowdfunding.