- Sylvanas pointedly pushes Saurfang over the edge at Lordaeron, making him stay behind at the gates to face the entire Alliance army alone, circumstances in which Anduin predictably would have taken him prisoner rather than have him killed. And also predictably he would have given him the idea to rebel with Alliance support, because that's how Anduin operates, and because it had worked so well with Vol'jin.
- The Dark Rangers are sent after Saurfang to inflame him and make
sure that he takes the rebellion option. Notice how Sylvanas tells the loyalist player that she has special plans for Zekhan, but then nothing bad happens to him; Zekhan is simply allowed to spread word about Saurfang and gather allies for their underground movement.
- Sylvanas sends assassins after Thrall, who is off in the fuck end of Outland, with no thought whatsoever of interfering with her plans. They lead Saurfang there and the end result is that Thrall is reeled into the rebellion.
- She openly explains to Baine in gory details a most abominable and dishonorable plan of raising Derek Proudmoore and using his mind-broken husk to murder the entire Proudmoore family in their sleep. She then leaves Derek to be "conditioned" in the most accessible of places, with no sign whatsoever that said conditioning is working, which leads Baine to rescue him and mend fences with Jaina.
- She has Baine arrested and floats around the idea that she will have him executed, which leads to Thrall and Jaina mending fences as well, and the Alliance and Horde rebels to start working together.
- She orchestrates the events in Nazjatar, which further cement cooperation between the Horde and the Alliance. Interestingly, loyalist players learn that Nathanos was tasked to use that campaign "as an opportunity to weed out the disloyal", yet both Lor'themar and Thalysra make it through just fine. We never learn who those "disloyal" were, so in truth she might not have meant "potential rebels" at all.
- Finally, she has the very public duel with Saurfang, in which, in spite of winning, she seems to go out of her way to lose support of her loyalists and let the united Alliance and Horde rebels take the city. She even makes a nice play on words that would suggest this was the plan all along: "
The Horde is nothing. You are all nothing" + "
Nothing lasts" = "
The Horde and Alliance will live on".
Sure, you will say this is nothing but wild speculation (with a little bit of logic in it, though). But it's more appealing than random nonsense to me.