one of the underlying core issues is the lack of metrics data for relay operators.
I filed the following feature requests to change this:
provide DNS health metrics for tor exit relay operators https://trac.torproject.org/projects/tor/ticket/31290
non-public relay health metrics for operators https://trac.torproject.org/projects/tor/ticket/31291
these are mainly copies from a previous tor-dev email from February 2019: https://lists.torproject.org/pipermail/tor-dev/2019-February/013655.html