http://www.ergocanada.com/products/keyboards/fingerworks_lp....
It had some pretty powerful macro/gesture functionality. A friend of mine had one and loved it, but wound up having to buy a humidifier to keep it working in the winter.
To the extend that tactile feedback is important for efficient typing, I imagine keyboard design for laptops is a tradeoff between good feel, durability, and making the mechanism as lightweight and shallow as possible. I'm typing this on a recent-model Thinkpad, and the key throw is about 2mm, substantially less than a high-feedback clicky-key type keyboard.
I still grin like an idiot pushing into the pad and telling myself that no, my finger did not go down. It is really magical.
If this can be done behind an eink screen or something similar, with a distinct feel for resting a finger and pushing a button, I believe it can be day and night for laptop keyboards. Alternatively, these eink screens could for sure have ridges for key delimitation.
On the plus side, very easy to clean.