I often like to just go out and fly around in Sport Mode - Mid rate, and just marvel at the precise control I now have. It truly is the closest a multi rotor will ever get to flying like a fixed wing aircraft.
Where the Plus excels with SD over the 480 is in the minute correction of a given flight path. In the video I am able to fly 300 yards dead straight down the gravel road because I am able to make very slight adjustments that you cannot see. The 480 with cruise (trim pad) could never, and will never do that - unless it's using the SD.
One thing is for sure, upon using Steady Drive and mixing in other flight commands (specifically rudder) the whole thing comes into focus. Now the aileron control is also useful in holding a straight line, for instance if you encounter wind and it starts to drift a little just turn the SD in the gimbal well until the drift stops. But it is also useful to be able to fly towards a subject and then smoothly do a yaw of 90 degrees will adding in a 90 degree direction change to begin an orbit all in a smooth manner.
Now, thiat is one of the maneuvers that takes a lot of practice because the are factors of control that come with stick position vs rate slider position. If I don't want a lot of rudder authority for these type of combined maneuvers, I will want the stick position high and the rate slider low. Conversely, if I do want much I will use the opposite configuration (stick low - rate high)
And it is these more advanced procedures and techniques that will require a pilot to have first a sense of what it is they want to achieve, but also understanding how everything works together. I have often said there is a point at which, essentially; with SD the use of the stick amount and rate slider have sort of swapped roles. I find I am more often than not, leaving the adjuster in one position, ie the stick amount, but using the rate slider and indeed the mode switch to get the speed I want and to be able to dial it right in. Its sort of like having four speed automatic transmission.