I don't know if you'll read this cause I'm a little bit late, but here you go.
I exclusively use a controller (Xbox One), and so far it has been a really good and smooth experiencie gameplay-wise, and that is with both a melee character and a ranged one. I did have problems recognizing my controller at first, but changing some Steam parameters did the trick. Now, navigating the menus is a pain in the a** cause it's so slow. I don't really mind not having a menu navigation system like in Grim Dawn, but for the love of god make the cursor move faster and allow us to buy stuff with a contoller as well. Also, picking up items is pretty awkward and slow. As someone else suggested, a good idea would be to make it automatic.
What was the rationale for choosing the triggers and bumpers as skill buttons? The A button is left unused, and the B for potions is pretty inconvenient. Correct me if I'm mistaken, but aren't the A, B, Y and X buttons usually reserved for skill attack...