Have you turned on Caption and taken a look at the default info being provided. This might be your best bet. See if that'll work for you.
I have tried turning on the caption. This is not going to work for me. I am very short on space. The primary need for this is to limit the amount of space required to summarize what filters have been enacted.
It seems that the feature exists since both the title and caption leverage how to summarize the filters. I just want to make this a little more dynamic and have some formatting control (i.e. show/hide items that are not filtered). Knowing that "the Category filter keeps 17 of 17 members" doesnt provide any useful information and only takes up valuable real estate. This is a small scale example. The user may have upwards of 15-20 possible fields they may want to filter from. If they only choose 2 of 15, the filter summary can be short and sweet.
Did you ever figure this out? I'm looking for the same functionality.