What's the buzz?
I don't know why they want thinner, but I'm saying 'I have a solution for you'!
So basically this is a solution in search of a problem? As he said, haptics is an immature field. It will be interesting to see what pans out and what goes nowhere. The biggest problem I can see with implementing it in mobile devices is power consumption will go up dramatically as it is essentially re-introducing moving parts which burn a lot more juice than do solid state components.