I "mine" an altcoin that might be looked at in a similar fashion called Gridcoin.  Take a look around, basically, it's concept is that the miners (freelancers in your case?) receive bits of research from different projects managed through Berkley Online Infrastructure for Networked Computing (which yes, does in a way "de-centralize" things).  Researchers are paid using PoW / PoS in Gridcoin, and it sometimes even pays the power bill. 

Is this similar in scope, or is your idea more in line with Golem (GNT)?