Ah, thanks for confirming folks. I talked with the dev team about this and it's unfortunately not something that can be done without delving into a fairly substantive customization. While it should be technically possible, it's outside the scope of what we can provide guidance on unfortunately.
That said, we do have the 3.0 release coming just around the corner and allows you much broader filtering capabilities that should match up with what you're seeking here. Happy to extend the offer of the beta to each of you, if you want to play around with it to get a feel for those...but I probably can't offer much more before that's released.
Hope that helps and apologies I couldn't do more. Let me know if you have other questions on this.