Perhaps I'm missing something but isn't there already pretty much the same functionality available when you press just [Win] (instead of [Win]-[R]) and start typing?
> Keys will be remapped as long as the Keyboard Manager and PowerToys are running in the background, and you can swap individual keys and even Windows shortcuts.
Keys can already be remapped via a Registry entry under HKLM\SYSTEM\CurrentControlSet\Control\Keyboard Layout, which does not require anything running in the background, although this works for individual keys only.
There is even a great GUI utility to simplify creating the correct Registry entries: https://github.com/randyrants/sharpkeys
