Default KitKat 4.4.2 "So what" thread

A genuine question - we get 4.4.2 so whats so great ?

Looking at wikipedia http://en.wikipedia.org/wiki/Android...PI_level_16.29 I'm seeing some optimisation, camera UI and multi-user profiles, sure also less susceptible to viruses but did I miss anything major ? Am I wrong to think that the biggest change might be whatever Samsung add on the top ?