I get some people enjoy playing the villain, and that's fine, but I think Blizz has dug themselves into a hole with Sylvanas, where if they kill her or have her go off and be villainous, it makes everyone look stupid for ever having trusted her or worked with the Forsaken...
And if they DON'T they made the paranoid orwellian dictator the -right- choice over the folks that want peace / any kind of moral code.
Worse yet, there are folks who don't see Sylv as villainous despite the stuff she's done in the past, all cause it was done to 'the enemy', and citing WoW not having real world war-laws, when... even by using WOW's cultures Sylv and the Forsaken are considered sadistic and unrepentant about the harm they cause (which is a shame because actual pragmatism would be fun, but we haven't seen that, just a lot of card-carrying villainy)