I actually prefer unified strength as well as radius. Perhaps I’m more simple-minded than most but my brain usually thinks in singular strength as I work between brushes. So if I make a strong crease then want to pinch it tighter, when I switch to the Pinch brush my mind still presumes “strong effect”. But if the pinch brush is really weak I’m briefly taken out of my mental zone and have to adjust the strength.
That said, I’m sure there are brushes that I primarily use weak strengths for which would make sense to leave low and disable unified strength.
In the end it comes down to preference. Try both and go with whichever best facilitates your workflow.
