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.
Alternate Character Interpretation: Surprisingly Gilderoy Lockhart. It's actually played very well how Lockhart can help Harry and vise versa. It's surprising when this interpretation made Lockhart a fan favorite. This reaction even shocked the author, enough to eventually write another story where Lockhart raises Harry entitled "When In Doubt, Obliviate!", which now has its own trope page.
Crazy Awesome: Harry. The other characters even think of him as this in universe.
Magnificent Bastard: Harry during his second year, after Lockhart teaches him to merchandise using his natural charisma.
Nightmare Fuel: Due to the deconstructions, a lot of the first few chapters reveal this from the original first book book now that Harry's looking at it though older eyes instead of just being an awed eleven year old. Examples include:
Neville's family (namely his Great-Uncle Algie) was technically trying to kill him to see if he had magic powers
What if Seamus's dad had reacted to his mom being a witch the same way Snape's did?
The fact that even the Weasleys have engaged in some subtle anti-muggle racism, though Ron doesn't seem to notice it (see the main page).
Unfortunate Implications: An unintentional one in Chapter 6 "...I've learned that people in turbans are not to be trusted." He's referring to Quirrel in this case, but out of context this reeks of Unfortunate Implications...