I'm of mixed opinions on this one. To me the notification beeps are all distinct and obvious what's going on, I've never been confused about the state of autopilot, yet when my mom drives the car she frequently gets confused by it, no matter how many times I explain the beep system and where to look to check the current state. I've turned on the "always rainbows" setting to make it more clear for her, which helps somewhat, but not always. I definitely support the addition of a voice alert, as long as it can be enabled or disabled on a per-driver profile basis.