Something that I've come across.... I've been buying "aging rocker ;D " CDs which have "new" covers, in that they are different to the original LP (ahem, that's vinyl to our younger readers ); also some "double CDs" which have two "originals" (LP or CD) in a "new" cover; as an example, the Ozric Tentacles "doubles" have covers which are a melange of the two originals.
It would be nice to be able to input both the "new" cover, and the original(s).