Makes sense Nigel -- thanks!   I emailed a couple vendors and provided the "InformationForVendors" link from chirp home page.
Also, with your hints, I found the list of requested new models:  https://chirp.danplanet.com/projects/chirp/issues?set_filter=1&f%5B%5D=tracker_id&op%5Btracker_id%5D=%3D&v%5Btracker_id%5D%5B%5D=3&f%5B%5D=&c%5B%5D=tracker&c%5B%5D=status&c%5B%5D=priority&c%5B%5D=subject&c%5B%5D=updated_on&group_by=