Organize Master & Child Page Resources (Models, AS, JS) into accordion items

Very often if not almost always do I work in pages that are child pages of a master. Storing resources like models, action sequences and javascript is really handy to have in the master so they are re-usable across all child pages. However, it’s hard to visually tell which resources belong to the master and which to the child when working in the page composer. It would be nice if they were organized into collapsible accordion items (similar to how components are organized into accordion items such as layout, data, visualizations, etc.) for either Master Page or Child Page. By default, the Master Page accordion item would be collapsed and the Child Page accordion item would be open, since the majority of the time when working on a page, the developer is actively working with the child page resources.