Options for Editing Masterpages efficiently

For this purpose, there is a listing of the masterpage(s) used in the current page 

(or the set of pages in the present work), as the case maybe.It also includes an option to edit the objects in the masterpage applied on the current page as and when required and also an option to revert back to the original masterpage whenever needed. To achieve this there should be a dialogue box,which would appear on clicking on the current-applied masterpage one wishes to edit, which will be containing the objects on the masterpage with options to edit/remove them temporarily and apply it to the current page without modifying the actual masterpage.