Yeah, I feel the reflog is more of a tool to do introspection on a git repository than that is a tool for collaboration. It's just something I've felt was missing from Git. If you're looking at the main branch of a repository, what was the previous version of that branch?

The way we work around that missing feature is by tagging commits so we don't forget what revision a release was made at for example. A sequence of release tags basically is a meta branch, a history of the release branch, but managed manually instead of through git.