Add a "Safe Mode" for Joomla

[Hackwar]

Is your feature request related to a problem? Please describe.

Users are regularly encountering issues with plugins breaking sites after enabling them or during updates and don't know how to disable them again.

Describe the solution you'd like

Add a new switch in the configuration.php to enable a "Safe Mode", which disables loading any plugin, resetting the installation to a minimal Joomla installation. The only thing working like before would be the authentication plugins to get back into the backend. This would allow to disable plugins and do additional work, since as far as I can see all changes in the backend should be possible without any plugins. At the same time, the mode would be activated during Joomla updates to prevent update issues.

Additional context

Thanks to @HLeithner for bringing this idea up.

[brianteeman]

This has been suggested before. Can't find the link right now but there were some very loud voices against it. I think it was in a discussion about isSite