It's great that they saved this one, but how many more films like this are rotting in vaults? > the museum has so many reels that it hadn’t paid attention to “The Oath of the Sword.”
Not even just films. The BBC was notorious for taping over old programmes to save money on tape and thus there's early episodes of Doctor Who that are lost along with some classics such as episodes of Hancock's Half Hour. I'd suggest that tapes should be digitised and that way they're far easier for the public to watch and categorise them so that other hidden gems can be found again.
Although just having a digitised archive doesn’t mean it can all be made public ally available, there are lots of rights issues and so on (writers and actors will want to be paid etc.) that prevent mass access to the archive.