Somehow, it seems unlikely that "beginners" are going to contribute major new articles on LW. In order to get the right to post, they'll have to join the community and fit in well enough to get upvoted on their comments on other people's posts. Once they've done that, they'll be well on the way to understanding the jargon (even if there are holes in their understanding.) At that point, they'll know what areas are of interest, and if they have a contribution to make in an area we don't often talk about, finding it on a list of things we think are missing is less likely than noticing a lacuna that was invisible to everyone else.

I believe there would be value in a list of Contentious Subjects, but Articles to be Written will be unlikely to cover the new material we're not aware we're waiting for.