Someone sent me a card, and I don’t want it to be in my outline. So I set it to be visible, rather than priority. But then I want to open the card in the noteboard to see its children. When I do so, it becomes priority again, appearing in my outline. This means that every time I want to open the card in noteboard, I have to then reset the visibility setting to visible.
I think setting cards to visible should be permanent.