The ability to bulk edit multiple SOV items at once to hide their subitems would be a very handy tool.
I have a large SOV at the top level, and do not want the equally extensive budget subitems to be visible on my pay application. Manually selecting each SOV top line and selecting 'hide subitems' takes a frustratingly longer time than it should, and could easily be fixed by the ability to checkmark the whole list and 'hide subitems'.
I like the ability to hide the sub items per line - I do not want this to turn into a blanket All On or All Off and nothing in between option. Hiding my General Conditions sub items but not the rest of the SOV sub items is still a necessity. However, often the need to hide all subitems is required and adds time to our workflow.