There are plenty of third party manufacturers producing quality snap-on additions for DJI drones... PGYTech for one (prop guards), PolarPro and Freewell (lens filters) etc.
Where you are: you'll find it a lot easier to source these kind of items...
And while DJI discontinued Aeroscope 2 years ago, there are other products in that space.
Consumer drones are all broadcasting in the Wi-Fi frequency space. It's a skillset of somewhat less than rocket science needed to build a system that can...