What do you think about something like this https://youtu.be/MXnHN7onU1Y?si=Pxp0_T0UHcXpSNUy&t=118 where the first couple values are shown on the dashboard (without having to open the filter control to see them) but then if you select too many what is shown instead is "4 of 75" which both tells you several filters are in effect and also signals to you how many.