Not sure if anyone else has the same issue, but personally, it would feel much more natural if my sword button was where the glove button is currently placed (side effect of large thumbs). While we can indeed adjust the size of the controls, having my sword button in the corner would make it much less likely for me to accidentally press the button either above or below it. A mode to move the buttons around and adjust their size individually would be helpful to ease the difficulty in navigating the controls.

Also, being that it's much easier and accurate to use a keyboard to play Graal, this may also serve to somewhat mitigate the evident skill gap between PC and mobile device users regarding the competitive aspects of the game.