I struggle with the fact that 90%+ of the SEO copywriting advice I see on the web or hear at conferences relates to the use of keywords and the content structure (I'm guilty of this myself sometimes, but have been trying to break that habit). While those things may add value from a technical algorithmic ranking perspective, the value of even one additional external link, at least in my opinion, dwarfs the value of having the keyword repeated in the H2 tag the correct number of times.
It seems to me that if and when copywriters are given the knowledge to understand the web's ecosphere around their content arena, and asked to target those who share and spread content on the web, their SEO work is likely to add far more value. That shouldn't stop SEOs and writers from employing good keyword usage practices, but I wish I saw more about how to "write for the Linkerati" and leverage the emotions that make people link.