Add Pasteboard Options to Document Setup
It would be handy if Pasteboard Options could be set in the New Document/Document Setup window - OR - Pasteboard default size options could be set as a percentage of document size (so it will scale relative to doc size).
My default paste board size is fine for most jobs I do (which are generally brochures / flyers etc); but it is too small for working on large banners etc. I find I am changing the preferences all the time.
I have to go in to every document I open and change the pasteboard size because the default is too small. It would be great to be able to skip this step. Either option you put forth would work well.