Is there a better way to quit the copter tuning?

We are aware that Quiktune is safer because the vehicle does not need to move or twitch but the disadvantage is that QuikTune cannot find the vehicle’s maximum rotational accelerations (e.g. ATC_ACCEL_R_MAX, ATC_ACCEL_P_MAX, ATC_ACCEL_Y_MAX, ATC_ANG_PIT_P, ATC_ANG_RLL_P, ATC_ANG_YAW_P), so if the idea of the Inflight optical flow calibration can be introduced to the next step after Quiktune (I called it QuitTune - complete the tuning) will be good. After that, users can focus on drone application and application tuning.

Meaning Quiktune + QuitTune = Autotune.

Is it possible? Does it make sense?

No, makes little sense. There are more differences between quiktune and autotune. Both are required and autotune is safe if performed after a correct notch filter and correct quiktune. And @Leonardthall added more autotune safety measures in 4.6.