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: The Count of Monte Cristo
Alternate Character Interpretation: Although he's presented as/intended as an Antihero, for a large part of the book, the Count is, arguably, a Villain Protagonist. He does manipulate a greedy wife into poisoning almost every single member of her family, including one Kick the Dog moment outside the count's immediate control where she poisons her nine-year-old son.
Fan-Preferred Couple: Edmond/Mercedes, which is incorporated into most adaptations of the novel. This is most likely partly due to Edmond/Haydee being a case of Wife Husbandry.
Funny Moments: The meeting between Cavalcanti Jr. and Sr., where the narration really piles on the sarcasm, as the respectful son hugs his loving father, secure in the knowledge that they're going to be rich.
Danglars' conversation with his wife, using a Hurricane of Euphemisms to inform her that while he doesn't care that she's cheating on him with the minister's undersecretary, he does care that it's costing him money.
Marty Stu: Arguably protected by Grandfather Clause, but think about it; the Count himself spends several years in prison, and in the meantime, obtains permanent night vision and manages to become a master of every common-for-the-day fighting style and several languages.
Misaimed Fandom: Readers are often left fascinated with the Count's overly-elaborate revenge plots, to the point that modern adaptations often just focus on the revenge and none of the moral nuances of the original novel. In fact, the author himself portrays the Count as morally questionable, and the final part of the book is spent on Dantes realizing he went too far and trying to make amends for it.
Older Than They Think: Among other things, the book is one of the first to introduce invisible ink and the treasure map as concepts, and the scheme employed to bankrupt Danglars is not only a version of the con known as the wire, but is essentially the same trick done in the Eddie Murphy movie, Trading Places. Also, although invisible ink was used earlier by Edgar Allan Poe in his story "The Gold Bug", this novel is one of the earlier uses of the idea before it became a cliche.