Better Than Canon: Given the treatment that the Mass Effect 2 squadmates were given in Mass Effect 3 (basically, demoted to extra), it's quite nice to see them continuing to be badass here.
Growing the Beard: The first few chapters are of... questionable quality, including showing the Normandy crew curb-stomping Covenant soldiers and even taking out Covenant Starships with little trouble. Thankfully, the story gets better around the time that the first mission of Halo: Reach occurs.
Like You Would Really Do It: Tali is at Sword Base when it comes under Covenant bombing shortly before Operation: Uppercut takes place, with the cast (especially Shepard) subsequently mourning her loss. Then spoiler: She greets Shepard at the conclusion of Chapter 19.