ah, yes, you are right. That would help with the technical key handling.
Nevertheless that brings back the issue with the language specific keyboard layout.
It would only work for keyboards which have the slash above the 7 (in my case, for a german keyboard), and would also work for e.g. an US keyboard, which has a dedicated slash key.
But for e.g. a french keyboard it would be above the 3 or the “:”, which also collides with other relevant special characters on other keyboards.