I was fighting in a large group of players in a BG the other day trying my best to pick off clothies and thought of a concept for a move that would be very nice, albeit potentially "overpowered," but cool nonetheless.
We've all seen the movies where the hero sneaks into the enemy compound and picks off the guards one by one, knocks them out or covers their mouth, disarms them and drags them out of sight. I think a similar move for a rogue would be very appropriate.
A move where you could sneak up on one of your opponents and drag him into the bushes (sort of a reverse Shadowstep)and wail away before any of his teammates realized he was gone. In pvp it could be very effective at maintaining alone time with cloth wearers, or pulling a healer out of range. In solo pve and instance play it could bring some great additional CC - perhaps the rogue could pull a single mob away from the group without aggroing the rest of the mobs. Of course it would have to have a long cooldown and/or an "out of combat" requirement, but I think it could be a nice versatile move to add some additional utility to the rogue class that fits in with the lore.