I could not find a place to put feature requests, so I am putting it here.

This would be very helpful when you do not want to whitelist scripts from specific domains, but whitelist JavaScript running on a specific domain. See the implementation in ublock origin, where pressing the power button disables ublock filters. Without this feature, sites that depend on JavaScript (and host scripts on multiple domains) that either have not made their website work with the extension or are nonfree.