I like the voting idea.

I love the approval idea.

But this would require a moderation team, which doesn't seem to be in place at the moment. I would be willing to join that team, and I'm sure many others would as well... but this post doesn't seem to have made it significantly far, so I doubt our voices will be heard. It is unfortunate if nothing comes of this, I firmly believe there are better methods to improve user experience without resorting to bots.