Strange, I have had enemies cc my companions and interrupt my casts. That never happened in my play time in WoW or Rift or any other MMO.
Out of curiosity, how many buttons(abilities) are you pressing during a typical fight with a solo mob and how many do you feel you should be pushing?
From my background I went from pushing next to no buttons in Vanilla/BC, too mashing buttons in LK, then actually having an involved system in Cata.
Please give an example of what you are looking for.