It is very difficult to rename Named Boundaries after they are placed. There is no way to do it within the named boundaries dialogue, and it is buggy to rename them using the properties dialogue. Sometimes the properties dialogue doesn't update properly when you switch between elements, and the name of the boundary under the Named Boundaries dialogue doesn't update until the window is closed and reopened.

This would be very helpful for longer and more complicated corridors where boundaries may need to be placed in small groups, or inserted in the middle of the set, and you want to keep the boundaries correctly labeled for their corresponding sheet.