I know this is related to issue 3026, issue 7350 and issue 22769, but I look at
this topic from a different viewing angle. I think the following applies mostly
to Writer documents, but it's a Framework issue.

It may happen that the filesystem where a document is saved gets damaged, or the
document is deleted and no undelete is possible. In such cases, the only user
option to recover something is to directly look at the disk content with an hex
editor (what a funny job!) hoping to find some clear text portions of its
document. With M$ .DOC files it could give "good" results, but with .OD?
documents it's no longer true since Content.XML is compressed.
For this reason I'd like an option to leave some files in the .OD? archive
uncompressed (mainly Content.XML, maybe others) with a "Recovery-friendly"
label. I think it wouldn't be a huge work, but somebody may find it useful when
saving important documents.

Best regards
Mauro