Instead, I offer new information.
A colleague just reminded me of a use case that was first raised ~3 years ago when I was working with the OMA [1] LOC group. OMA LOC are currently defining detailed requirements for a new positioning protocol - LPPe - and amongst the work items is work on SET (Device) to SET positioning.
I'll continue to try to find the original presentation, but in lieu of that, the synopsis is pretty simple.
Using GNSS signals, it is possible to determine the relative position of two receivers with greater accuracy than the absolute position of either.
As long as the receivers are close (on a planetary scale), atmospheric errors are similar. This is what drives differential GPS, but it has wider application.
The most basic use case is relative navigation. One user can be given precise directions to their target. Think of the tracking devices you see in the movies: "your target is 732 meters away on a bearing of 73 degrees".
Option B doesn't support this application. Option A does.
Given that the advantages of either are highly subjective, it seems better to base decisions on something tangible.
--Martin
p.s. For those with OMA portal access, this document might be interesting:
For those without, I can provide the document. It is public.
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