i can see not thinking of many uses for gyro controlls, because there isn't alot that work well to be honest, but complaining about a touch screen? Its basically a regular controller, with an awesome accessory. The only things i ever enjoyed with the gyro were aiming Links bow(eh), and wii sports bowling(awesome).
A touch screen however, is inventory control without having to pause the game, a map without taking up the screen, infinite buttons, added use context touch controls, gui interface for an in game pda, a sniper scope, a rearview mirror, 3d augmentation. While gyro could be considered a gimmick, touch screen can add some depth to games. Now i would have been up in arms if there was no joystick because touch screens are no substitute, but there is a joystick(and its not actually a slidepad as rumors would have you believe in the first week)