The most disconcerting thing of all in this presentation is the knock-down-from-above with a single press of one button. Very, very worrying. In the old Thiefs, SO many things had to be taken under consideration before you actually let yourself drop to the surface and successfully knock out a guard. What is the surface? for example. Was it metal? Stone? You don't want to drop yourself down on a metal floor to knock out a guard but alarm the entire area in the process.
*sigh* The devil was in the details with the stealth in Thief. Hell, the devil was in the details in every game rooted in our nostalgia. I hate the simplicity of today's gaming.
Also, Jerykk, the "don't use the VAT system if you think it's imba" is still such an incredibly invalid argument. The mere fact that you CAN fuck the guards up takes the edge off the stealth.