I looked an only saw references to that in uBlock Origin, then realized I read the question wrong :/. As far as I know it is possible to do everything I want in uBlock Origin (I do the same with fonts), however the interface is less convenient than uMatrix, even with the advanced extra panel. It would work if uMatrix ever goes away, but I'd rather use uMatrix while I can. I tend to leave changes as temporary only when I can unless I am visiting a site frequently, so I end up having to redo many permissions and even a small increase in convenience is nice.

Gotcha, that's fair enough!