[Fedora-packaging] Using self-Obsoletes instead of Epoch bumps?

[Ville Skyttä]

Has anyone ever experimented with or considered using self-Obsoletes as
an alternative to Epoch bumps using plain rpm CLI and various
depsolvers?

Assuming there's a finite and known set of "supported" packages, listing
all of them as an explicit, exact (note: always "=")

    Obsoletes: %{name} = $v-$r

for each such (E)VR could possibly be thought of as a 3rd party friendly
substitute for an Epoch bump.  Sure, it would be a larger maintenance
burden than the bump, but how much so, and would it even work in
practice?  Good/incrediby-stupid/something-in-between idea?