[Inkscape-devel] checkered background rendering mode for transparency?

How hard would this be to draw/implement - even if just for my build ?

I'm often making all-white SVG's and wanting to keep the background 100% transparent so that inkscape faithfully renders PNG's

would it make sense to include an object attribute that is painted but not rendered like sodipodi:invisible where something like opacity:0 is forced but ignored only by us ?

-- Andy