Navigate backwards with keys if entered into hierarchy (column view)

If _in column view_ I have navigated to (lets say) the Downloads folder via the side-bar, I would like to be able to press the left arrow ← to be able to traverse back down the hierarchy, as I can do in macOS Finder. This was always an extremely common use case for me. As it stands presently, I must mouse to where I want to go next, even if it is a simple single folder down.

Many thanks to the Files developers for continuing to humor my suggestions. :-)

EDIT: To clarify, I don't mean traversing the hierarchy of the sidebar in this case; entering into a folder via the sidebar was just one example. I could just as well launch from the command-line to illustrate the point: `io.elementary.files /home`, now I cannot press the left arrow ← to go to /

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