I’ve got a technically functional version of elevation display working locally, but I’m really struggling on the UI side of things. It gets super complicated when including both desktop and mobile in the decisions.
On desktop, there’s a ton of space to put it
- Top right, which kind of pairs evenly with the existing Route Builder popup UI
- Pinned to the bottom, which kind of gets in the way of the bottom left measurement UI and the bottom right attribution UI … but I can probably figure out a way to avoid colliding with those.
On mobile 
I don’t really see any usable space. The map view is already pretty small.
Maybe I can figure out a way to toggle the elevation display so on desktop it pushes the map up (appearing a lot like your first screen shot) … and on mobile, it leaves the map as-is and places the elevation UI below that (partially covering the text content below the map).
