Since you're now not providing 3.5mm sockets on your top end phones there's an opportunity for you to showcase high quality audio over USB by doing it right.
To do this, you need to provide digital USB-C headsets in the boxes with these phones. These headsets need to be sufficient quality that they show the benefit of removing the 3.5mm socket.
This headset and the phone both need to support USB audio class 3.0 and be packed with the all the features this spec supports. Don't hold back, really showcase what's possible. Maybe the 9PV and Sirocco are already compliant with audio class 3.0, but the inclusion of the strange 3.5mm adapter with the 9PV suggests otherwise...
The final touch would be to include an adapter which allows wired USB-C charging whilst using wired headset. The lack of a clear standard for this is a problem though.
Put all this together and you can resurrect the XpressMusic brand! I know that's not what XpressMusic was before but history didn't get in the way of the PureView branding reuse did it?