Can/should we randomize nsid in MS Office documents

The documentation states the following@

This element associates a unique hexadecimal ID to the parent abstract numbering definition. This number shall be identical for two abstract numbering definitions that are based from the same initial numbering definition - if a document is repurposed and the underlying numbering definition is changed, it shall maintain its original nsid.

It seems that it could be used to fingerprint documents, but I don't know how easy it would be to randomize them.