I have the 13" MBP with Force Touch. Hands down the best trackpad I've ever used. Apple continues to dominate in this space.

The "Taptic Engine" part of the Force Touch system is imperceptible from hardware "clicks". The ability to have a second level click seems interesting. Turning of the computer and pressing on the trackpad is like a magic trick.

While not many apps (and not many portions of the OS, even) are using the "pressure granularity" system of Force Touch, I will reserve judgement on its benefits and usefulness, but it is incredibly well-engineered.

Overall, I can see Apple including this across their entire product line, if technically feasible. It is as good as Touch ID.