That’s great you have a community-created solution. 
I’ll leave this feature request open so people can still add their voice if it’s something they’d like to see in core. 
I think there has been some ideas floated around making this section of the group settings a ‘group-allowed’ style input in a simailar vein to the recent changes to the admin settings - Changes coming to settings for giving access to features (from trust levels to groups)
Though I’m not sure on how probable that change could be, nor on a timeline if it does attract more interest.