I just beat the Silent Cartographer level on Legendary, and it is no picnic. The place where you hit the trigger to unlock the door to the map room now contains 5(!) invisible Elites instead of the normal 2. Not good times.
umm, space_rover, I believe that paragraph you wrote was the very definition of a fanboy rant. You, sir, are most definitely a fanboy. Not that there's anything wrong with that.
THe only issue I had was when I left a stealth shield on the feline Jedi chick, and there was a cut-scene where she wouldn't show up due to the whole being invisible thing, causing me to crash. Other than that, no problems whatsoever.