I would suggest making a manual mode for M&K.
It would turn off auto targeting, I feel like auto targeting is for controllers its like aim assist in an FPS its not needed for M&K.
Use WASD for Movement and the curser to turn/look/aim character like Poe 2 or V Rising.
Make all the abilities skill shots.
It would make fighting multiple enemies feel a lot better. Currently Auto lock will switch targets sometime or you hard lock and want to switch is kind of annoying and extra buttons to press.
The combat and movement can feel disconnected at time because the character not turning in the direction of the mouse curser, I know you can hold right click but that just feels off to do.