I recently had problems with a MX record changed by an admin (he manages several domains).
We have several domains pointed to gsuite email (Google). If MX records are changed, it is unoticed by end users since they keep using the service as usual and send emails, they just dont receive any more.
Once an end user finds out, it is because of non received emails, a problem that could be prevented.
It would be great to check MX records of a domain to find any change... hope it makes it to an upcoming version of PA :)