It would save a lot of time in maintainance if there were a way to link identical objects that happen to be on different pages to one master object.
Sort of like with templates but this control...
You can do this already in a way. One of the things you can do with property values in NameMapping is indicate that the property value is set based upon a Project variable. So, when you change the variable value, it updates the property value automatically in your NameMapping at runtime.