Thanks for the suggestion @kinetiksoft! I like to keep shared components without group features though . The reason is that in my experience the actual use cases are often more specific than just selecting a group. You might need to distinguish anonymous visitors as well. Or display different content to different groups. And then it adds complexity already.
I usually fork components or just implement different layout options with CSS. So I’m afraid this would be my recommendation as well.
Sorry for the confusion @martyn_thomas and thanks for explaining the reason @Arkshine! I’ve updated the about file to state "minimum_discourse_version": "3.2.0.beta3".