Why can't you use a smart controller on a Mavic 3? According to DJI, the Mavic Mini uses OS3+. That sounds like a reasonable answer at first. But when you dig under the hood, the remote control for the non-Cini version is an RC-N1. which is also used for other Occsync 2 drones. And if we look in the other direction, the new RC Pro that ships with a Mavic 3 won't work with other Occusync 2 drones. Why has DJI deliberately allowed this incompatibility?