In the launcher, there could be an area to view the contents of your minecraft directory. On the sidebar, there would be a button to lead you to it, and you could view things like:
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Screenshots: You would be able to view all of your screenshots and copy/share them (and possibly edit? 👀)
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Shaders/Resource Packs: Same with screenshots, however you'd be able to download shaders and resource packs directly from modrinth through these menus.
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Worlds: Would show a list of your worlds, and you could import world files into it easily.
There could also be an option to switch between directories in case people use separate directories.