Add the ability to mark the color brush. So that they can be grouped according to style. To manage the brushes need to constantly go to the preset a manager, do to manage brushes directly in the viewport: remove, transfer, selection of brushes.
Tolya, I've wanted a way to keep sets of brushes within sets for years. Layers have groups. Our panels of presets should load any file as a group. I finally saved a No Symbol brush as its own brush to load, then added it to any set I created, so each set now starts with that symbol. I can name the set by renaming the symbol. It's something until Adobe eventually gets around to making our panels work efficiently. You do, unfortunately, have to create your own sets first, but at least the Preset Manager is good for something.