Hide Dashboards from Drop-down menu

I would like the ability to hide unused Dashboards from the Drop-down Dashboard list without having to delete them.  There are Dashboards created by BrightGauge that we are not currently using, but we don't necessarily want to delete them. We just don't want them in our quick options for viewing.  Now that there is the new Dashboard list view feature, this could show "Hidden" dashboards on its own page, or greyed out on the list with an option to "hide" or "unhide" for all users.  Admins would be able to review the list of hidden dashboards and "unhide" them if we want to begin to use them.

This would make our drop-down list so much easier to manage!