Extending LyX is a nice idea, but I'm not sure why he doesn't just use LaTeX markup for crossreferences, styles, etc. directly in Scrivener? (Footnotes and marginalia are natively supported in Scrivener.) There's an active community of LaTeX/Scrivener users who do this, and in fact a subforum on that topic hosted on the Scrivener site.

For those who find LaTeX frightening, you can also use an intermediate level (less imposing and more accessible) markup in Scrivener called Markdown that can be exported to LaTeX.

-- Chris

DaXiong wrote:

Overnight, I've had an
exchange with someone who's trying to merge LyX (www.lyx.org) with Scrivener. You
can read about his idea here
(http://www.oak-tree.us/blog/index.php/2009/03/04/perfect-tool He says
the LyX people are supportive, and he's got a prototype working. (Note: Yeah, I
volunteered to beta test it). I'll keep you informed.