Additional Paper Sizes in Blank Document Presets

This has been irking me for a while, so I finally decided finally make a feature request...

I often have to design large posters (a0, a1) or small postcards (a6). Sadly these aren't selectable as blank document presets, so unlike a5 to a3 paper sizes I have to specify the dimension manually. It would be great if these standard papers sizes would be available in the new document window by default. I often visit www.papersizes.org when creating a new document, just to make sure I don't accidentally create a document with wrong dimensions, feels like a bit of a waste of time to me. It seems the selections from papersizes.org could easily be part of the new file dialog.