In reply to Michael.

Thank you for your comments. There are a number of programs that can convert scans or PDFs into musicxml files. Scoring Notes had a round up of some options recently: https://www.scoringnotes.com/reviews/scanning-the-current-omr-landscape/
You can already use any of those with Dorico via musicxml files. However, the musicxml format does depend on the exporting and importing program to support various features to get the best results. We do try do a good job with the import. We also have members of our team on the W3C committee for MusicXML working on that format and also possible future formats for better compatibility - more details here: https://www.w3.org/community/music-notation/