Portal 2's current interface and interaction design do not cater effectively to tablet and mobile devices, presenting challenges for users on these platforms due to the lack of touch-friendly navigation and responsiveness.

The enhancement focuses on redesigning Portal 2 to be fully optimized for tablet and mobile devices. This entails revising the user interface to ensure that all elements are easily navigable via touch interactions. Key considerations include increasing button sizes, ensuring that dropdown menus and other interactive elements are easily selectable, and implementing responsive design principles so that the layout adjusts dynamically to fit various screen sizes and orientations. This optimization aims to provide a seamless, intuitive user experience for Portal 2 users across all touch devices, thereby increasing accessibility and usability on tablets and mobiles.