Export Folders - Add ann option in preferences

This just came up on Facebook and there are a few threads about it, but may I request an option in preferences to specify the folder to be used when exporting PDFs. No doubt other users will want a similar facility for other export options.
For myself, it's because I keep my scores in a cloud folder so I can access them on my pad when I'm out playing music. I don't want to have twice as many files in the folders, making it slower to display the one I need.