As SIMP moves forward, I would assume that users will want to be able to easily pin to any supported version.
They may also want to use the unstable or rolling repos without issue.
Presently, the purpose of the main RPM is unclear as it sits in the repo.
Something like simp-community-release-6-rolling or simp-community-release-6.4.0 and/or simp-community-release-6-unstable.
This will prevent confusion when SIMP 7 and SIMP 6 coexist at some point in the future.