BCD536HP Firmware Enhancement Suggestions

Something I've been asking for since I got the 996T when it first came out seems to also have been ignored and omitted from the 536--namely, a different sound for toggling things on (low tone, high tone) or off (high tone, low tone). Very useful when you can't look at the screen but need to press buttons to make things happen, like avoids, unavoids, toggling bands on/off for Close Call, these kinds of things. Also, a different tone to let you know you've gone around the full list of options when scrolling them with the FUNC knob, like channels within departments, avoid lists, departments within systems, etc. Another one would be a rising two-tone sequence when holding on something, then a falling two-tone sequence when releasing the hold.