I don't think Sylvannas is evil. I'm sure she just has to make crazy choices to accomplish whatever it is she wants right now. Of course, she does some fucked up things, nobody can deny that, but I love it. I think she lost most of her morality when she was raised and after enduring all she had to go through, so she doesn't mind killing people and raising them back to bolster her armies, but I think it's all part of what she needs to do to be a good leader and now she doesn't have any of the restraints she had when she was alive. I think she is all about getting to her goal, without thinking of the consequences. The whole plague thing is crazy, but it was a really good plan to get rid of Arthas. In the Wrathgate, he was damaged enough to have to retreat. If Putress hadn't done what he did, Sylvannas might've used the plague on Arthas and dealt him the killing blow right there. I can't think of her as evil, I know she suffers deeply for what happened to her and the High Elves and having to live apart from them is even worse. She made Thrall accept the Blood Elves into the Horde and it giving her a necklace from her sister was enough to make her extremely depressed. I'm sure she is resigned to her Undead life and her new people (who she has to protect at all cost), so she uses many unorthodox methods to keep her people alive. She clearly has her own agenda and I'm sure we will learn what it is soon enought, but I don't think she is being controlled or anything. It would suck so bad if they pulled a Kael'thas or Illidan on her.. I really love Sylvannas, she is really tragic.. it's like she was pushed into so much crap and now she has to make the best of it even if she becomes a monster in the process.. I'm hoping for the best, I want her to reunite with her sister, see what they have to tell her :D Maybe she'll soften a little and stop acting all that crazy.