Want Inkscape's Multi-page to work in web browsers (and other tools)?
Well my work today has been on moving our inkscape:page element to the SVG standard "view" element. Already supported in web browsers and hopefully supported someday in SVG viewers that use librsvg (are you interested @federicomena ?)
This will need testing and a migration for older data too. But I like more standards compliant files and less custom stuff in inkscape's svg.