If Sylvanas had actually wanted to legendary fighters like Thrall and Saurfang dead, she wouldn’t have sent only two rogues that RAN STRAIGHT AT THEIR TARGETS SO LOUDLY YOU COULD HEAR THEIR FOOTSTEPS. That’s some Warrior stuff right there, not Rogue. She would have sent a dozen, they would have waited until the targets were seperate and/or sleeping. This is a bait, and the two orcs swallowed it.