Interesting. The issues with centered margin: auto text aren't entirely clear from your blog posts, since in the
one where you discuss your formatting system the css for print is identical to the code that's 'dumbed down for ADE'.
ADE certainly has a lot of issues (and clearly isn't a big priority at Adobe), but the real problem is the increasingly decrepit state of the ePub spec. I'm not entirely surprised that there's a move to jump ship to a
de facto standard based on the strengths (and manifold weaknesses) of the mobile Safari platform, but it's a very worrying development.