These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Die for Our Ship: Aggra gets a fair amount of this. This is not surprising, since her debut sinks the Thrall/Jaina ship, but it still comes off as quite vindictive.
High Octane Nightmare Fuel: What the night elf sentinels describe of how their companions were not only killed, but skinned and chopped into pieces.
Moral Event Horizon: Magatha poisoning Garrosh's axe Gorehowl, which results in Cairne's death and is immediately followed by her having the Grimtotem kill her enemies and take control of Thunder Bluff, nearly costing Baine his life.
Tear Jerker: The aftermath of an earthquake in Kharanos, which claims the lives of many people, including one of Anduin's friends. Cairne's funeral, especially considering that his long-time friend Thrall Never Got to Say Goodbye.
Values Dissonance: Jaina's theory on why Thrall is unable to denounce the attacks on the night elves as strongly as Varian thinks he should is that orc culture does not allow it.