I was searching the user guide looking for Dynamic POI but nothing, then the forums and found your post but after I posted this request.
No doubt, that feature would be very powerful to have.
When creating a POI for a Mission, have the option to choose the Mobile/Remote GPS real time location as POI.
This is similar to Focus Fly Mode but here is fully automate by a Mission.
The Follow flying mode is not reliable enough for this.
Use case: Having the drone follow with (Pitch, Heading, Position) a subject while being restricted to a specific flying path.
Apologies if this was posted before.
I have moved this post to this thread because it was requesting the same feature and this thread already has a number of votes.