I don't like the idea of straight reposts.
I think this would be much better done with a code change for the site, allowing editors to pick a featured article that sits at the top of the main page. My estimate would be 1 day for someone familiar with the source, maybe 2 for someone unfamiliar. Of course those estimates should be at least doubled to 2 / 4 days.
While I'm unfamiliar with the code myself, display code for the current featured article should be simple. The other, harder parts of the task would be an interface to allow editors to choose a featured article (but not necessarily that complicated, you might be able to take a url for instance and then editors could find it with a simple search), and storing the current featured article.
Well, how about rather than reposting, we just add a "featured sequence post of the day" section, or something. It'll look just like "recent posts", but it'll go through the sequences one by one.
Possibly we could just move the "promoted" functionality into the sidebar... I have to admit I never actually click on anything in the header... but I click a lot on Right-hand navigation.
No reposting so no double-ups and karma stays where it is, it's just a different way of featuring existing posts.
So, the London community is arranging a Hackday where some of us will get together and code. In order to ensure we work on the awesomest idea(s) possible, we decided to ask LessWrong to add to our list of candidates. So here is the question:
What could a few developers do in a day or less worth of coding that will be awesome? Also, as a way of checking calibration, you can give your estimate for how long such a thing would take to build.
Note: While we will take ideas and voting here into account, there is no guarantee that we will actually end up choosing one or more of them.