A two-stage model would seem workable. Stage one would be like Kickstarter as-is: if(speculative funding threshold met), then(inventor/creator gets a payment s

A two-stage model would seem workable. Stage one would be like Kickstarter as-is: if(speculative funding threshold met), then(inventor/creator gets a payment so they can start work). Stage two would be like a bounty for meeting some further goal(s) (still actively working on it three months later, actually wrote/released the program/art, X number of products shipped in six months, etc). Right now, selling your product to people (who don't get one for being a backer) functions as stage two. But I don't see why formalizing that process would be detrimental (it would also start providing some metrics on "success" beyond "funding success"). Though the issue of who gets to decide if the goal(s) is(are) met is an obvious point of probable contention which needs resolving (backer votes?, panel of experts at the payment escrow service?). As a potential backer of something, I might like to know that there is going to be a continuing clear incentive on the table to keep the creator working through inevitable obstacles. That might increase the number of times I open my wallet.