Improvements to cumulative elevation change in the profile box

I'm super stoked to see the new cumulative elevation change when you click on the profile view of a line. This is a great planning tool, but I have two thoughts that could make it even better:

1. It would be great if it could show elevation (and distance for that matter) both before AND after the point which the cursor is over (i.e. show 800m to this point, 500m left to the end of the track). This would be very useful for trip planning. 
2. I don't seem to be able to get the cumulative elevation to work on mobile. It would be great to have this feature on mobile too, especially if it could snap your cursor to your current spot on a line if you're close enough. Being able to quickly see that I have 4km, 500m of elevation gain, and 100m of elevation loss left until the end of my line is invaluable in the field. 

P.S. I tried to post this yesterday but didn't see it show up in the forum... If I did somehow make a duplicate, feel free to remove one or the other!