Thanks! Hopefully they'll see the value in it and get it added as a capability sometime soon. Using MapBox is going to have a cost associated with it - hopefully AutoFlightLogic will not withhold an important feature from us because it cuts into their profits too much. Your point regarding temporary obstacles is a good one and it's one I hadn't thought of. That makes this a good feature to have even in areas where Google provides clear and recent imagery!
As for flying in between trees - even if you have super accurate imagery - your GPS location will vary based on how many satellites you're currently connected to and other factors - so unless it's a pretty big passage between them - I'd still be cautious about trying to fly in between them!
Haha, yes obviously a bit dangerous, and maybe GPS is not accurate enough if the trees are too close. But I like it:
Lost in spring