The answer seems simple. Digitise the wills and any of historical value as identified by an independent body made up of Twitter historians can keep the originals for prosperity and research 😂.
Digitise the lot and start with new wills. I understand the value to historians of keeping old pieces of paper but at some point the costs of that have to be evaluated against the benefits. You can’t just say “it’s of an unquantifiable amount therefore we need to keep them”, that’s such a lazy cop out.
In fact I’m increasingly frustrated that all legal documents aren’t digitised. Shuffling paper around is so backwards and a nightmare to search and index efficiently.