Hello! I have an MX Keys S, and I would like to recommend one small adjustment:

When it is time to charge my keyboard, there is the red light, and on my table there is the USB-C charger. I usually try to plug the plug without seeing the actual hole, so maybe the led indicator should indicate where to put that thing.
It's the small things you know :-)

(and also have an MX Master 3S)

Thanks & bye
Előd