Custom Filenaming for Generated PDFs

It would be great if we could change the naming convention used for generated PDF filenames (invoices, estimates, etc.) using tags, either globally or as part of a specific template, as I find myself having to rename those documents before sending them outside of Syncro - which I do often because of the single outbound mailbox limitation.

This also affects the Dropbox integration for invoice and ticket backups, and autoprinter to PDF uses a non-readable string.