Newbie: How to set take-off altitude?

Maybe you misread my “cm” and “millimeter” …?

Travelling from/back to homepoint can be done safely at a correctly set RTH height.

Not necessarily misread, but I understand what you are trying to say. Considering the map I just mentioned is sub-centimeter and you can still get better resolution as I was at 100ft AGL I just wanted to make it clear of what DroneDeploy was capable. If you’re looking for better than that you are not going to reliably get it with real accuracy with photogrammetry. That’s what lidar and laser scanners are for.

…and you say “correctly set” RTH. It’s funny how that already exists as a problem for some. Don’t get me wrong, I like your idea as well and would encourage you to make an official Feature Request, but it definitely has some strong cons in consideration.