Hopefully, she will go with the Wilhelm Scream this time around... after Darth Maul's stupid resurrection, it looks like that's the only way to make sure someone is properly dead. https://www.youtube.com/watch?v=9ua2RWL5big
By promoting a trailer, they want to send the message that there's so much expectation than the trailer itself is a product that deserves to be promoted.
They're trying to sell expectation. Jar Jar Abrams is very good doing that, usually through viral marketing. The news here is that they need to use paid ads.