Given the smaller size of the 3S, I know processing options will be more limited.

A setting that can enable a sound, such as a chime/beep, to play when a something is sent over the Bluetooth connection would be helpful. If I'm using my phone to only send nav directions, the sudden noise can be overwhelming since the current 3S doesn't change audio volume automatically based on speed. Having a notification of upcoming Bluetooth audio delivery would be nice.