Plugin Suggestion - MenuGroup choices for expanding/contracting menus

Right now we have a choice on the CMSB Admin page (under Admin General Settings) as to whether we want the menus always expanded or always contracted.  It may seem like a small thing but it would be GREAT if we could choose the always expanded/contracted option on a per menu group basis.  Some of my clients CMSB sites have a LOT of sections, and grouping them by Menu Group is extremely helpful; BUT some of those sections they use daily, some monthly, and some rarely.  If they choose "always expanded" so they can have ready-access upon login to the sections they use daily, then they have to view (with scrollbars) all the sections.  It would be much more conducive if they could just have one menu group always expanded and the rest always contracted.Does that make sense?