With the discussion in #131 which brought up a point about sub-themes, I decided it was a good time to point out that parent and sub-themes have never had a good UX feeling because the UI was never designed to incorporate them.
Proposed solution
What I propose is to slightly re-design the theme overview page and move the title of each theme into a "group" heading to allow a theme with sub-themes to all be housed together.
Mockup Example:

Draft of feature description for Press Release (1 paragraph at most)
The Backdrop theme overview page has been tweaked to group sub-themes together with their parent themes to create a better UI experience.
Recent comments
Awesome, glad I could help. ๐
Customizing Leaflet Widget popup content and appearance.
Thanks! I managed it out with your help. Turns out I had the Leaflet widget allows for a title and description. This have a dropdown menu in the Leaflet settings within the view...
Customizing Leaflet Widget popup content and appearance.
Hi geoma, no need to excuse. I think, now I got it (more or less). Your problem doesn't actually have much to do with the Leaflet module, but you struggle with the combination of...
Parent items won't show on Leaflet Widget.