I really like Slots and the Duplicate features but I would love for a slot to duplicate the content when set to fill and the parent item is expanded.
At our organization, OCLC.org, we just a lot of tables or in MUI’s case, DataGrids. Like a lot of datagrids. To make a component that expands columns and rows when an frame is expanded isn’t available. I’ve been working on this with Slots and components in our design system but you still need to select each slot and pull the duplicate bar to expand it to shape.

