The components in the assets tab are currently organized in folders by file > page > frame/section. You can have an even deeper hierarchy if you name your components with one or multiple slash separators like Buttons/Toggle Button. This, however, bloats the component names so I would like to have the possibility to create deep hierarchies by nesting frames. As of now, only the top-level frame on a page is considered when grouping components in the assets tab and frames inside of frames are ignored. The same goes for sections inside sections and frames inside sections.

If this would result in unwanted asset organization because the frames are used for layouting purposes, a compromise could be to allow this only for sections inside sections.