As many people have noted, Less Wrong currently isn't receiving as much content as we would like. One way to think about expanding the content is to think about which areas of study deserve more articles written on them.
For example, I expect that sociology has a lot to say about many of our cultural assumptions. It is quite possible that 95% of it is either obvious or junk, but almost all fields have that 5% within them that could be valuable. Another area of study that might be interesting to consider is anthropology. Again this is a field that allows us to step outside of our cultural assumptions.
I don't know anything about media studies, but I imagine that they have some worthwhile things to say about how we the information that we hear is distorted.
What other fields would you like to see some discussion of on Less Wrong?
Business, and the many subfields thereof.
I've been hanging around LW for a number of years now, and only recently have begun learning anything about business. I've often been struck at how relevant much of what we cover is to "the art of human rationality." The following topics or oft-repeated themes are potential gold mines:
Business scholarly literature includes theoretical articles and case studies. The theoretical articles are often trivial or ill founded. But the case studies are very valuable for me--I naturally err on the side of excessive abstraction. Like fiction, case studies provide the reader with vicarious experience from which s/he can learn--but of course the events in the case study are real and nothing is obscured or exaggerated for the sake of entertainment.
A great strength of business literature is its clarity. Perhaps because the audience is assumed to be exceptionally impatient and busy, most articles are neatly paragraphed, feature helpful graphics, and have the business equivalent of "tl;dr" all over the place.
Another reason LWers might be interested in business is, of course, that business success leads to more wealth, which enables more philanthropy.
Edited: fixed a word and added a bullet