I agree! For example, we already know Teseo-LIV3F supports Japan’s Quasi-Zenith Satellite System (QZSS), with capacity to use only the L1S signal from QZSS, therefore no other communication infrastructure (e.g. mobile towers) is there needed to locate/reach someone in emergency need. HELP112 project “found that the average location accuracy using Cell-ID was about 1.6 km, using Wi-Fi it was 23 metres and using GNSS it was about 16 metres.” On top of this project is COSPAS-SARSAT with, currently, 45 countries and organizations participating in the operation and management of the COSPAS-SARSAT system.
I cannot contribute (without subject matter knowledge and not having needed money other than to pre-order another one) but this is the way how I see Librem 5 (further) development direction, concerning the usage of GNSS on the Linux phone, as it will influence its certification as a smartphone, AFAIK. If Purism gives some more light on this, when considered very needed and achievable, relatively complex requirement (with existing GNSS receiver chip and technology) I would appreciate. And if, maybe, I’m out of the subject here (again), I hope there are people that understand better what I am looking for, because it is about lifesaving feature.