I also have a Thinkpad, and I think they solve this quite nicely. You can clearly differentiate between the 3 buttons due to how '3D' and sculpted each button i

I also have a Thinkpad, and I think they solve this quite nicely. You can clearly differentiate between the 3 buttons due to how '3D' and sculpted each button is. None of the buttons feel the same to the thumb. (At least for the Trackpoint buttons. The touchpad buttons are as terrible as any other laptop manufacturer).