After having assigned hotkeys for the keypad numbers (combining them with Cntrl) in Windows 10, I realized that LibreOffice does not distinguish between the mail keyboard's digits and the keypad number keys, thus reacting on the hot key that I had thought to be unused. That is unfortunate as it reduces the number of usable global hot keys available for other applications. Thus I suggest to implement a different keyboard scanning routine that allows to assign different functions to (e.g.) Cntrl+1 on the main keyboard and the number pad.
We just had a go round over this when the assigned shortcuts for the SB decks conflicted with Alt code Numpad entry on Windows, see also bug 158112 Fixing that on Windows [1] isolated the Numpad keys from the main keyboard keys--so it is feasible. Just not clear how appealing it would be cross platform. =-ref-= [1] https://gerrit.libreoffice.org/c/core/+/161891