The ability select a number of views under a group of views or the ability to right click the "heading" grouping a number of views and duplicating either the selected views or the "heading" group with all views under this "heading"
If you do the "heading" option the simple solution could be just place copy after each view name as is when you currently duplicate a view. A better option would be for Revit to intelligently recognise a pattern of the view names being duplicated and automatically rename to the next available number. This might mean those views will need to be associated with the base view (ie under Level 1 there is the architectural plan(base view), electrical layout, plumbing... duplicating this group of plans for level 2 will need to associate these to the base view of level 2....)
For reference found a similar archived wish here: Duplicate Views in Project Browser