Adobe Nav for Photoshop is nice, but I think it's not facilitating the iPads potential as a high-bandwith input device. Selecting tool is better done via the keyboard (physicality, tactile feedback etc.). What in my view would be the killer "app" is to use Adobe Nav to zoom / pan the canvas in Photoshop. This would lead to a very dynamic two-handed workflow as painting with the dominant hand and adjusting the viewport with the non-dominant hand is a very natural distribution of tasks. This would ideally facilitate the iPad's use as an additional navigation device for the non-dominant hand, alongside the mouse or a pen input platform. Please implement this!