I have a shortcut set to “Hide/Show Item”, but it doesn’t work on dynamics. There already is a “Hide intensity marking” option in the properties panel, but I can’t find a way to set a keyboard shortcut to toggle it. Is there a way to do this, or to make “Hide/Show Item” work on dynamics?
No, Hide/Show only applies to time signatures, chord symbols, and playing techniques. It doesn’t (at present) apply to dynamics.
Also, I love your avatar pic. But shouldn’t you be “That Bassoon Guy”?