When I use the default vertical bracket, I find that the horizontal line is sometimes too close to the staff line, and I have to adjust it. Here in beat 2 of bar 1 I used the properties panel to mov the top position +1 and in beat 2 of bar 2 I moved the bottom position -1.
There’s no way to get these by default that I can see? Or am I missing something? I guess it’s hard because even if there were a global setting, I would want to apply it only to the position occupied by a note on a staff space (as here); the positioning for notes occupying a staff line is good.
But even absent that complication, I don’t seem to find default settings for vertical lines anywhere.