We are already moving towards a paperless society - Trek PADDs are just like folders really.
Company I work for its literally a laptop, spare screen and a keyboard if you want one and we can do the entire job without anything else on our desks.
If the PADDs were at least modelled to be majority screen and look to be multi use then you'd call then an extension of the iPad but right now they are less advanced the a 1st gen iPod.
Been paying closer attention of late and have really noticed how useless LCARS is - the buttons don't appear to give feedback, or correlate to what the typist is doing (often times they aren't even pressing where the eventual buttons are) and seem so limited in scope.