Your idea of creating a 'fair' decentralized system cannot possibly be made to exist. There will always be certain groups of people who would have an 'unfair' advantage over others. For instance, forcing people to mine to be able to utilize the technology would disincentivize a large number of people, making the project an inevitable failure. But in order to solve this problem, many such Pool Mining platforms would rise up to provide willing customers to pay a fee for their transaction. Assuming the voting power is distributed equally among all miners, this would lead back to the same problem of centralization, where pools would have a greater control over the blockchain.