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.
YMMV: Halloween II (1981)
Ass Pull: John Carpenter himself admits that while writing Halloween II, the idea of Laurie being Michael's sister came to him "at 2:00 in the morning in front of a typewriter with a six pack of beer."
Villain Decay: The revelation that Laurie was Michael's sister. Some felt that the reveal took away the menacing mystery that made Michael such an effective villain as it gave a reason for him to stalk Laurie instead of leaving it as an unknown motive. Others felt that Michael's obsession with killing his family members may make him out to be one of the more brutal or irredeemable slashers as even some villains care for at least one family member.