Comment 4 for bug 1330222

If it's the expected behavior, then it's wrong or insufficient. You can call it a feature request but it's a pretty basic feature.

You _should_ be able to rescale a document to a different paper size when printing, without having to modify the document's properties.
A pdf has a page size of its own too, yet when you print it with, say, Evince or Acrobat Reader, you can choose any paper size other than the document's own, and then decide whether to shrink/expand the document to the printable area or not, and whether to center it or not (it does lack the ability to choose a positioning, other than centering or aligning to top-left, which I reported to Evince btw)