One objection is that the information is a bit removed from actual instrumental rationality (of the sort CFAR is meant to provide). It's like reading about muscle function and reflexes instead of reading a karate book (which is still not learning karate). Some of the stuff is actionable, but my overall impression is that much work is needed to make it so by the reader for the bulk of it.
Dropping Martial will lower the claim to reasonable levels IMO.
OTOH, "The Art of Rationality" just sounds... generic.
Quantum Computing Since Democritus got me thinking that we may want a more riveting title for The Sequences, 2006-2009 ebook we're preparing for release (like the FtIE ebook). Maybe it could be something like [Really Catchy Title]: The Less Wrong Sequences, 2006-2009.
The reason for "2006–2009" is that Highly Advanced Epistemology 101 for Beginners will be its own ebook, and future Yudkowskian LW sequences (if there are any) won't be included either.
Example options: