Show-Hide Totals for users to switch


This has came up in many reports we have made, our internal users would like to have an option to switch on or off Totals in the report (with them being Viewers or Dashboard viewers)
Right now it is only possible to set the report from the beginning with it or without.
Thus, making multiple reports just to be able to show or not totals is making report count double.
How feasible it is that this could be realized ?