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?
What are the current developments? Is anything dominant now? Wiki claims Logical Positivism was dominant until 1960.
Also do the current developments matter? Would any of the hard sciences do things differently? Did the change affect the soft sciences?
There's nothing as self confident as L.P. now, Having adopted naturalist, many philosophers are finding plenty of problems with it. There's a lot of interest in Kripkean theory, but it's not really a movement,
Mainstream philosophy hasn't affected how science Iis done. Neither has LessWrongian philosophy. Both are aimed at clarifying and promoting the scientific approach. In neither case is it clear why affecting science iwould be a necessary or expected upshot. LessWrongians seem to think that clarifying and promoting science is important enough in itself. You can only fail at what you are trying to do, or what you can reasonably be expected to do.