PDF exporting right now is bizarrely bad. The page size from the attached printer (really?) determines the PDF output sizes. To export a 12"x18" score, I needed to uninstall my printer driver. It then exported at the document size.
Document settings should determine the default PDF export options, but should be easily changeable.
There should also be robust naming options for exported PDFs: the code system in Sibelius worked ok, but was a little cryptic. There should be a way to easily select and place various tokens in the filename, combined with plaintext. These naming strings should be saved with the file. String history should be easily-selectable for new files.
I’d also like a numbering option to keep the files in score order. There should be an automatic and a manual numbering option.