This is interesting—my observations on Windows 10 (mostly with a layout arranged via MSKLC) have always been that it does some kind of QWERTY-on-Control thing which I'd actually like to turn off but never found out how to; my keyboard shortcut memory seems to indirect through keysyms in a way loosely symmetrical with how my Cinnamon FDO/Linux desktop handles things, rather than being position-based, with the exception of WASD-like game controls which are positional. Is the main difference with your utility that it handles Alt as well?
Hmm. I haven't actually used a Windows desktop for anything other than gaming in decades. Probably the last time I actually used my remapping tool on Windows was in the XP days. I guess it's possible that Windows 10+ now includes such functionality by default, but this would surprise me.
