The difference being that in what I have in mind, anyone can publish and anyone can review, so it would be more like Arxiv and less like Nature or Science. In the scientific world there are stringent filters in place before you are allowed to play the game at all. Also, scientific communities tend to be small, and they are dependent on each other for funding. That introduces politics and perverse incentives. (I used to be a researcher. The politics and incestuousness is one of the reasons I quit.)