Hello,
if I am not wrong I think one can accidentally restore a divisi section leading to existing parts of music to hide (if the topmost staff is empty). It would be nice if dorico could warn about such scenarios. Does it make any sense?
Now that you mention it, it would be nice indeed if Dorico would signal if there’s music on hidden staves (intentionally or not). Not only divisis, but also for invisible ossias or just extra staves added to an instrument. New signposts maybe?