I know this is a little niche, and a pet peeve. But - I would like a way to create exceptions to crop boundaries. Typically - doors.
We create a lot of enlarged plans that are just one room, and those rooms frequently have outward swinging doors. We can either expand the crop to include the door, or accept that the door is trimmed off. Or, create the view from a plan view that is not placed on a sheet, and then create a reference callout on the plan that is placed on a sheet. None of these is ideal
There are probably other cases for other disciplines, so I don't know if I would limit this to doors - but, however it works, I need to be able to control exceptions for objects in linked revit projects.