The device is obviously intended to be used on a desk as well as in a ceiling (as evidenced by the room seletion mode). However, when used on a desk, there is no keypad, there is no volume control, and there is no way to end a call. Since it looks like a giant Google Home device, maybe it would be possible to at least add volume/mute/disconnect controls by adding tap sensors, similar to a Google Home Mini?
As a marketing opportunity, you could make a simple bluetooth keypad with number keys, volume, and call/end buttons and sell that as a companion. Think of it as the missing bluetooth paired phone that you’re expecting it to be paired with.