> might be handy to have a scale in my pocket sometimes.
I would kill for that. I diet in a geeky way, weighing everything. I have often thought that some kind of foldable scale that fit in my shirt pocket would be nice.
If weight on the screen often breaks the force touch sensors without breaking the screen, that's an ugly UI problem. Even with a low "force touch / no screen" accident rate (< 1%), there could easily be tens or hundreds of thousands of users walking around with broken force touch sensors that have no idea their phone has a problem - because there's no visible signal that anything's wrong. They'll just think force touch is broken and/or unreliable. That's no way to promote the adoption of a new feature.