Just checked out VMPrint and it's crazy! Keep up the efforts. If you/someone could get a HTML/CSS input layer in front of VMPrint that would be a killer feature? Or is it possible already?

HTML/CSS is notoriously bad for print.

Basic text styles are ok, but things like authored pagination, page header/footer, mirrored margins, margin notes, footnotes and references are basically unsupported or need to be hacked together.