I think that's actually a separate issue. What I specifically want from a Google Maps share URL is for it to be something I can send over text that will reproduce for my recipient exactly what I see.
A lat/lon/zoom/start?/dest? is kind of what a Google Maps share currently is, but it's neither an interoperable standard nor a reliable capture of the current state, so really the worst of both worlds.
(Also, hi AB! Nice to see you on here)
Google does provide an interoperable standard for communicating lat/lng pairs via text: https://maps.google.com/pluscodes/
I believe it was their response to what3words. It's not as good at the "communicating by text" use case as what3words.
Hi! I think I’m on the same page (give or take a zoom level) now. That is hard to do between separate geodatabases (hence CRS, placenames, geocoding, etc.) but Google isn’t even doing it within their own. And the only way I can obtain a link is to first place a pin, which wants to snap to nearby features. If I try to link a nice trail near my home it snaps to the quarry instead, making me look like a maniac with a terrible idea of what a “quiet walk” looks like.