1. Does the collision avoidance system override whatever altitude limit is set for the sake of saving the Phantom from crashing?

2. Wil the DJI Go software when updated for the Phantom 4 still impose the 500m radius for autonomous waypoint missions?

The altitude limit has the top priority, it means the collision strategy will not break the rule. About the waypoint, it should be the same as the P3.

500m waypoint radius is really annoying. I know there are 3rd party apps, but it shouldn't be necessary. I think removing the limit or at least extending it for the P4 is justified on the basis of having some collision avoidance tech.