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)?
In the case of Gridcoin and Golem, users are offering their computers capacity in exchange for tokens. We do something totally different, people complete real work, like doing a translation or creating a logo in exchange for the tokens.
Value is created for those holding the token when a work requested (like Coinomi) buys and later burns some $force tokens. In this way there is liquidity in the market for those who want to exchange the $force token for something like Bitcoin, and also value for everyone that holds $force increase as result of the supply reduction.
This allows our token to work across chains!
Here is our white paper:
(still a draft so open to all suggestions)
https://docs.google.com/document/d/1kbvsQ3UQ3PA7cZYucERRqnhXVfx0yJAxuthK30qvilc