I’d love a version of the Spectrasonics feature, where you can shift-click a preset in the list, and it puts a mark next to it (a blue blob), just for that instance of the plugin.
Some way of temporarily marking presets like this would be really useful when auditioning hundreds of kits – just mark the ones you like so you can go back to them later. It would be equally useful when choosing individual drums etc within the kit.