The thought is not new, it has been done for Community “Portings”, this is just an example:
You will find more examples in that section.
So, I would second your proposal but ONLY for official released versions.
Maybe an archive thread with the last two or three.
I see posts which publish beta download links, which (in my opinion) is totally wrong.
These betas should only be used when devs are asking for testing a fix.
Some could potentially not work so these should never be public download links, be it v3 or v4, it just causes unwanted support issues.
Again, my opinion.