The request necessitates an extension of the current design of the Key Command implementation. It would be necessary to hand over parameters to a dialog.
Presonus Studio One implemented this in its Macro section:
If Cubase could have the same, we could make a macro like
Add Instrument Track - Argument “Serum ; Stereo Out ; ; 1”
Obviously, my above is just jibber jabber since I clearly don’t spend enough time in Cubase.