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.
Moral Event Horizon: No matter whose side you're on, the murder of Rutland, York's young son, and Margaret's subsequent taunting about it, makes it pretty well impossible to feel any sympathy for her later in the play.