I'm not sure I know of a better place to do philosophy (as Paul Graham defines it) than LW:

let's try to answer the question

Of all the useful things we can say, which are the most general?

...

One drawback of this approach is that it won't produce the sort of writing that gets you tenure.

(PG's example of a useful general idea is that of a controlled experiment.)

What specific new audiences do you think Yvain should try out?