You can simply add the feature to hide labels for the minimized items in a group. This would be a simple feature to add without dealing with the styles, buttons, themes etc. It'd only be useful for taskbar buttons where we show labels but that's better than nothing I think. Most of the time I choose to show labels for apps whose windows should be identified quickly (e.g explorer, browsers etc) and with those this feature would be great to not to misclick minimized ones which mostly you don't need temporarily.