Yes. The design if a robot is truly crucial to it's functionality because that is really the rule across the world of tech. Design is not just how something looks, but how it works (As once said by the overly creepy Jony Ive). If you change the design, you essentially change how the entire thing works. If you wind up with a bad design, you'll probably end up with bad functionality. This really is how the tech market operates, and this can definitely carry over to the robotics industry as well.