[ri0t]

It's always a little minigame of not activating too much but still getting a working site.

Fishy things get painted red, hopefully good things get painted green - reload and try again, if it didn't work.

I sure hope, some maintainers pop up and keep this thing alive!

[squarefoot]

Both extensions are FOSS, so anyone with enough time and skills could say extend the uBO engine with the more powerful uMatrix interface, where the latter could be accessed through an "expert" option for more granularity, then submit the result to gorhill for evaluation, so that he would have a single codebase to maintain.

[freedomben]

Do you actually know that gorhill would be open to receiving that work, or are you just guessing?

That's an enormous amount of work (for someone totally unfamiliar with the codebase that would have to learn) to undertake on the off chance that it would be accepted.