Provides: and Obsoletes: to satisfy pre-extras package dependencies?

[Jason L Tibbitts III]

Is there any issue with new extras packages containing Obsoletes: tags
which facilitate upgrades from the pre-extras packages?  What about
Provides: tags to satisfy dependencies of packages which are not in
Core/Extras?

The specific example is par2cmdline:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=190070

which has

Obsoletes:  parchive <= 1.1.4
Provides:   parchive = 1.1.4.0.par2.%{version}

 - J<