I'm now imagining building a marketplace site roughly like eLance/oDesk/whatever else, where the investor can put money in escrow and clients (freelancers) can "bid"--but it's the freelancers who are proposing the jobs in their entirety, not the investor.
Wouldn't it be funny if a MVP uses one of those freelance sites and spends the $5000 on a team in India to finish the project in two months and then has the $3000 to promote it? Subcontracting can be fun you know.
Nope -- see the comment below my own, panther2k saw it and did it. Which is exactly what I was hoping would happen when I threw the idea (rephrasing your idea) out there--I have enough startups on my plate already :)