Let me summarize in order to see I understand your suggestion…
You want technical details like what type of audio (e.g. Atos, DTS-HD MA…) to be made available as an advanced filter so you can create a smart collection based on those?
If so… it appears this is already covered by another suggestion
There also seem to be a number of suggestions already dealing with options to import or transfer metadata from an old setup / database, e.g. Built in Backup/Export/Import of Metadata between platforms also
