Conditional filters

Hi and thanks for the great plugin! We have a number of attributes on our site that we setup as WOOF filters in the left sidebar. They work great. The owner of the site has asked if there is any way to set it up so that it only shows 3 of the filters straightaway, and not the many others. Then, after the user selects a value for one of those 3 filters, it would then show all the other filters.

Namely they want to show the filters:
– Brand
– Model
– Part type

After any of those is selected, they want all the other filters to come out of the woodwork, which includes all kinds of measurements and various other things they filter on.

Any way to do that? “Show this filter if one of these filters previously had a selection.”

Thanks!