Verbal traffic alerts indeed work very well. While SD algorithms do a good job in reducing the number of traffic alerts to those that are truly relevant, more often then not the odd traffic warning competes in the headset with

- SD's airspace and obstacle warning
- and radio traffic from one or more monitored frequencies

It would be a great idea to 'pan' the stereo image of the verbal alerts? Typically, the radios come in mono, i.e., dead centre. Readability of parallel messages could be much improved if airspace warnings came slightly, say, from the left, and traffic warning slightly from the right. 

I am confident that this suggestion will be considered, as it would greatly enhance the usability of the new verbal airspace and traffic warnings.

The Garmin audio panels that I referred to (which spatially separate two comm radios, and copilot and pax positions) cost some EUR 2500 VAT including, and easily the same amount or more on top for installation and mod approval (if installed in type certifies aircraft - subject to country specific regulations). So there is considerable value in this feature.

By the way, while I mentioned “stereo panning” in my OP, I understand this effect today is generated by phase shifting, making use of “psycho-acoustics”.