When we need create a rigid group for a big number of components from Pattern (in my case 78 components was created in a Vehicle (water) radiator. 78 vertical water channels) it use a lot room in the browser. To avoid it we can create a pattern in sketch mode, but is a lot work to do selecting one by one. Off course Fusion is a amazing software where anything can be create to improve the tools for a Fusion.
My idea is to minimize the amount of lines located at Browser. In this case of Rigid Group, need to be created a component with sub-components into it. Per example a folder with sub-folders into it.
In the Browser when we click in the main arrow "Rigid Group component" (Main folder to expand/open it) will be showing: a) origin, b) 78 Components, and when we will be clicking in the individual component will be opening it to show a body. The similar way which is ready exist in the Browser.
When we close the arrows will be showing just one line. In the "Time Line" also is ready showing just one symbol.
I believe Autodesk engineers/technicians can do it to improve Fusion 360.
https://autode.sk/2LSXqJG