next step is to make a one giant trackpad with keys printed on top of it. os if you touch it its a key press and if you drag it its a mouse movement. now only need to figure out how to mouse click ;)
The idea is solid in theory, but in practice I would not use it. Without tactile feedback it just feels weird and imprecise, and I can't help but look at the keyboardto make sure I press the right keys even on the ultralight keyboards that still have seperate buttons.