"Controller Configurator" implementation for Experimental Overlay

[veeeanti]

Is it possible to implement something like that in the overlay by any chance? Just a basic controller remapper since with Half-Life 2 you cannot hope to change your controller mappings using this after the 20th anniversary update. So when you would click on the "open steam input configuration" button in the options menu, it'd open the overlay and allow you to utilize that.

If memory serves correctly, the overlay is experimental for a reason and is still highly unstable, right?