Unfortunately there is still no reliable unattended upgrade process inluding rollback (aka migration) for wordpress. I looked into this a little bit, but there

Unfortunately there is still no reliable unattended upgrade process inluding rollback (aka migration) for wordpress. I looked into this a little bit, but there does not seem to be a reliable way to check if plugins have been executed successfully and with expected results or not, so you never know after an upgrade if your site is broken. There are still many other issues with the code, but having a clearly defined error-handling / -signaling for plugins would be the one single change that would help in many problem areas of wordpress development - making rules and knowledge about successful plugin execution and error handling obligatory for plugin devs could be the one single change that could also help to reduce that annoying flood of unbelievable bad code to be found in WP plugins repo.