Default-provider and version tracks not supported?

Not sure if snapd or snapcraft is in play here, but I am trying to solve an issue where we break the world when we update our content pack. We have to rebuild over 200 snaps and this takes time. Also anyone using the kde-neon-6 extension will be broken and I have no way of knowing who is so they can be informed to rebuild. A simple fix is version tracks! But I am told this isn’t supported? Oh but why, what is the point in tracks?

Thanks for any insight. Scarlett