I have some suggestions to do about the great app Pilot.
At the remote person side because a mobile device has a small screen compared to the experts' side:
Option to formating the default formatting of the text in the arrows, like the size and the color of the text.
Option to formating the default formatting of the arrows, like adding movement (continuously up-down) and to add different colors.
Option to hide/show all actions the expert mentioned to the remote person by arrows or shapes.
Option to hiding/showing the experts' guidance steps one after the other on the screen by hiding all the other steps. For example, I am the remote person and I am on step #3. I care to see only the next step and maybe the previous. At the end will appear on the screen the last one-two steps.
A summary button that will show all the steps expert side suggested like an index list.
When drawing a shape around or on an item, it is possible if the item change position to be followed by the shape assigned to it before?
At the Experts side:
Option to add ready signs like "Caution there", "Don't touch that", "Electricity here" in order to help the remote person avoid danger or not touching some sensitive area.
Option to send a text to speech to the remote person (the second could repeat it).
I'm not 100% sure that all of them have significant meaning, but I think if they existed most of them it would be nice.