Valve's Steam Machine and its paired Steam Controller are still in early beta, so we should expect both small and drastic changes to various aspects of both devices. When the Steam Controller was revealed, it was announced that a small touchscreen would be placed in the center of the pad, making it somewhat like a miniature version of the Wii U tablet. Now, Valve has decided to nix the idea of the touchscreen altogether, and replace it with regular, physical buttons.