Was just watching your stream and someone had asked about exclude gem color filter. you were worried that the filter was too busy already and it might trigger some restructure. I have an idea to make this super simple (imo) for the devs and functional for the players
below is #1 the base filter image. then #2 when you click once you get the pretty green check box that enables the color. #3 if you click a 2nd time instead of it going back to the original state, what if it went to a disable/rejects that color symbol. Of course clicking again would send it back to default. basically putting one more action into the click stack.
the purpose here is to exclude any troops that contain the Xed out color. same way the check box includes troops of that color. so for example if Green is checked and red is Xed; you cannot find troops that contain both green and red, only troops that are green and other colors.
of course i would expect the red X to be prettier than mine. since i used the Uber MS Paint program