I think your thinking is entirely correct . Once the reward pool is distributed equally no matter the time invested into content creation and quality, it quickly becomes demoralizing for good content creators.
But at the same time your suggestion, which I agree with, would possibly reduce the number of people who use this platform. I read your whitepaper and I think in reality on Steemit there are almost no content consumers, because it is not a content consumation platform just yet. People come to Steemit to make money. If no money is earned by a person, even if their input time is small, the person will leave.
I am thinking how we could retain more users while at the same time promoting good content more, but I cant come up with an idea.
RE: Crowdmind - Empowering The Wisdom of Crowds