Interesting.

I'd be interested in the maintenance strategies you have in place (if any).

I assume that for plugins who don't output styles or scripts you use other methods, maybe some HTML output etc, so you've probably hard coded a lot of stuff for some popular plugins.

How have you set your tests and how do you plan on knowing when a certain plugin stops emitting the signature you're checking for? Most probably an E2E test with a local theme containing everything, care to share tech specifics ok this part?