I'm left-handed and would love to know how are you lefties doing with the game. In my experience, the controls are extremely annoying. With the frankenstick, I get to aim perfectly but movement is stupid (because we never get to move characters with right sticks, only camera, and I can't adjust to that). Without it, movement is perfect but aim is extremely poor (because I'm a leftie).
So... I can't find a way to actually have fun with the game. It's annoying either way, and nothing seems to fix my issue. But I'm interested in how other lefties are playing it.