Request to be able to hide system brackets individually
Prefatory staves (which are used when transcribing early music that shows the original clefs, key signatures, and note pitches at the beginning of the first system) can be created by inserting a horizontal frame between bars 1 and 2 of the first system, and by hiding various elements such as bar lines, rests etc, but there is no way to hide the system bracket from the prefatory staves without removing it completely from all other systems.
In the graphic above I've circled in red the bracket I want to hide, while leaving the 'main' system brackets intact.
As a suggestion a possible solution to this problem would be to have the option of 'visible' box in the element inspector that would be applied only to the selected bracket. So in practice to hide a particular bracket from any system you would only have to select the bracket and deselect the visible box in the element inspector.