Locked moving area

Make it so that we have the option to choose a region in the screen where the movement wheel stays locked, sometimes when I'm playing my finger slips and goes outside the screen, then it makes a new moving region and I'm not able to move down again, this happens a lot especially in arcade, if you could add the option to lock region movement I'd be very happy. Thanks in advance.

Thank you for the suggestion. We'll look into the suggestion whether having a fixed movement pad would be feasible.