I just had dinner with a very successful consulting colleague, and he told me he was returning his new BMW because he hated the software. Instead, was getting a Porsche that has physical buttons for the controls instead the touchscreen in the BMW.
He was happy with everything else about the car, but a poorly designed interface killed the deal. Just because you can add fancy features like a touchscreen doesn’t always mean you should. Are you adding fancy features that get in your users’ way?