Option to Collapse Custom Data groups in the Adv Search Custom Fields section

For some of our users who have hundreds of custom data fields visible in Adv Search, it would make life saner if the Field Groups were collapsed at the outset. Using "Collapse this group on initial display" does not apply to how it displays in Adv Search. And I think the two functions should be separate anyhow. SO maybe a checkbox in setttings "Collapse this group in Adv Search"?