Why can't we make things simpler? How about an imageboard, similar to 4/7/420/whateverchan, in which threads that are not popular 404 in minutes/hours, while popular ones stay on the first page? This way we would have to make multiple boards, and create new boards at your own discretion. You have a large community, and when there is a large community, imageboards thrive. We could have everyone set to Anonymous, and have the option to create names/tripcodes for security/notoriety.
Also, reaction images.