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)