Luna,
I wanted use the drone as an additional tool for making videos which would include now also myself (on most old family home movies I was not on them since I operated the camera). With the follow me and watch me mode it would be now possible. When walking or driving I do not need to look back at my bird she’s simply follows me very nicely with realsense and does not stops for one obstacle but goes around or over it.
About flying slow speed. What is the problem with that? Its similar like making a route trip with your car some people enjoying driving around at a lower speed so they can enjoy the surrounding area while passing it.
I guess when you wanted like to fly around at high speeds, its fine for me. Get a race drone and go full speed ahead and enjoy your flight.