At first it was all about presenting data in an original looking way. In the end it was about pushing political ideas in your throat using a plain bar graph. It was not about sharing something interesting you found but about taking advantage of a captive audience.
Change the css so that hitting the up arrow downvotes and hitting the down button up votes. The users could use the voting buttons as usual but the unpopular posts and comments would be pushed to the top.
That’d a neat idea. The only real problem I see with it is some users turn the CSS off, but I doubt that’s the majority of users.