It leads to market adoption because it reduces the supply of steem thereby driving the price in dollar terms of steem up. This increases the size of the rewards pool in dollar terms. Each person would then earn more per post. The increase in rewards would lead to more users and more importantly, more active users.
Advertisers would buy steem because when push comes to shove, the demographic of this place is an advertiser's wet dream.
As soon as we get the crowdsourcing protocols out there, I'd love to see this in a proposal. It sounds like you have a clear conception of how this could work, which deserves to be shared around.
Please keep this idea in mind, because it's sounds like something worth trying.