[kiallmacinnes]

By "place to dock", you mean like a USB port or something else?

Lots of keyboards obviously have that already - including at least some of the Das Keyboards (mine does...)

[chiph]

Yes, but not on the back like they have (on some models) but on the top. If your key is in one of the rear USB sockets, when you press down to activate it it will stress the port (it acts like a lever).

I was thinking on the top, parallel with the surface. Lay the key on the keyboard, slide it to the left to insert into the socket. When you press on the key, the force gets transferred through the key onto the keyboard, and so no flex or stress on the socket.