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: Diamond In The Rough
Alas, Poor Scrappy: The general reaction to Brolli's death after the events of the second half of the film.
Audience-Alienating Premise: One of the main causes of Angst Aversion, it's the story of a boy who goes to a magical fantasy world in hopes of going on an adventure and becoming a hero, only to end up on a long downward spiral of loneliness, paranoia, betrayal, and death, and the audience is frequently reminded Brolli will die.
There's another portion of the audience who are fine with this, saying Brolli deserves to die for being shallow and ignorant. However, approaching the halfway point, we find out the characters are more than they appear to be and some of the events didn't really happen the way we thought, as well as bringing up some rather obscure Touhou facts only found in the source books, showing the audience they're no better.
Calamity2007: I don't get it Spaztique, how do you want us to feel about Brolli? Because you have mentioned before that people wanting to see him die is a reaction you're going for. I'm not complaining, I just find it strange that your giving him all these heartwarming moments if that was the reaction your going for.
Spaztique: Ambivalent. He's not wholly good, nor wholly bad. You're supposed to be torn between whether he should deserve his eventual fate or not. Though, to say any more will spoil the ending...
The depiction of Yukari creates a lot of conflict, because when she reveals that her plan to guarantee the Gensokyan paradise is to create a Forever War between humans and youkai, some people declared her to be morally bankrupted, even considering Blue and Orange Morality. Though it's explained that she's portrayed purposefully this way, in order to make a contrast with the way she's portrayed in gappy fics, basically as a Female Japanese Blonde Santa Claus, and following her actual canon portrayal of a mischievous youkai.
In the middle of the previously listed "Light of Faith," it switches to an orchestral arrange of "Oriental Dark Flight" (specifically, the part at 2:30) when Marisa finally fulfills her promise to Reimu to stop Brolli if he got out of hand.
For the ending/end credits, milktub's tearjerkingPurest Sky And Sea. Then, when the credits fade to the fate of Brolli's beret, it switches to a slowed-down, somber version of Foxfactory's Wonderful Heaven.
Darkness-Induced Audience Apathy: There have been a few calls that the plot is basically a giant downward spiral for a Gappy that leads to the destruction of Gensokyo with nothing to stop it. Though, by the end, Brolli, Reimu, Aya, and Momiji are the last ones trying to save Gensokyo, Tenshi's efforts will prevent further destruction by Jack Diehard and future Gappies, and Vic sets out to stop more people from taking Yukari's offer..
There have also been a few who have voiced this about the treatment of certain characters in the series by either a Gappy or another character, and the Kick the Dog moments getting more and more malicious. Yuuka is probably the biggest example. Some people by the end have brought up that they wished everyone should suffer a Fate Worse than Death for all of them being at least indirectly responsable for Brolli's death and Gensokyo's destruction.
Ensemble Darkhorse: Among Diamondback's beasts, it seems Lepus is the most well received among the fandom. It could be because he get the most screentime, is funny, helps Brolli with women, and is actually the nicest (that being the least Jerkass) of the beasts.
The characters rarely say "no," but rather opt for "not really." This is a Japanese language convention, as it is impolite to directly say no.
Mokou mentions her father was humiliated and killed trying to attain one of Kaguya's impossible requests. In the original Tale of the Bamboo Cutter, only one of the princes was killed trying to get the cowrie born from swallows.
When Brolli is moved via Sakuya's time-stop effect, he suffers from formication, one of the side-effects of mild decompression sickness.
Six hundred million cubic kilometers, the amount of space Brolli's pockets will contain affect learning the magic of the Codex Puteus, is how large the Pacific Ocean is.
All of the tactics Lepus uses are legitimate pick-up artistry tactics, from negging to embedded language to focusing more on figuring out the girl than revealing Brolli's traits to make him seem more "mysterious." In addition, his advice about putting a pillow under the waist is to increase the "angle of attack".
It Was His Sled: Even before the completion of the series. GENSOKYO LOCAL BEEF IS PEOPLE! Specifically all the other gappies.
Captain Obvious Reveal: Partially subverted. It's obvious from the start Yukari's meat is made of people, but the fact that Brolli and the other Gappies (along with some audience members) don't suspect a thing drives home how much these unsuspecting kids trust Yukari. The partial subversion comes when you realize it's not just any people: it's every previous Gappy.
It doesn't help that minus the part about the Gappies, Yukari gapping in humans for food for the Youkai is canon.
Misaimed Fandom: "Fans" who haven't seen the full movie wish they were in Brolli's place. While many who have seen the full movie and its Downer Ending changed their minds, there are also "fans" who have seen Diamond In The Rough in its entirety and missed the point completely...
Some fans who did understand Diamond In The Rough have adamantly attacked any sort of outsider main character as being a Marty Stu, even though Spaztique has said multiple times that a Gappy is not necessarily a Stu, and a Stu doesn't have to be a Gappy.
Rescued from the Scrappy Heap: The Diamondback Beasts. Originally based on blatant Marty Stu characters, retooled into more likable or compelling characters. ColonelDiamondback has adopted many of their traits for his own videos.
Possibly subverted when they turn into destructive villains.
The Scrappy: Marisa fits in this trope for some viewers. She is the only one that doesn't feel regret for her actions and she's Not So Different from Brolli, also taking advantage of Gensokyo's resources, leading to the Broken Aesop of "you can explore Gensokyo as you wish, if you don't become an existential threat." Although she has a track record of resolving incidents and obeys the limits of Gensokyo, some viewers tend to see her as being Born Lucky.
Rescued from the Scrappy Heap: Episode 11 seems to try to rectify this though by her admitting that her actions are a bit selfish and saying that even then, she would sacrifice her life if it meant preserving the balance of Gensokyo. Whether or not viewers accept this remains to be seen.
The Diamondback Beasts were this originally but the final video product has them having a bit of Character Development, especially Lepus...That is until episode 13 where they destroy the Scarlet Devil Mansion, against Brolli's wishes and crush Flandre in the rubble. Which seems to have thrown them back on the Scrappy heap.
Ships That Pass In The Night: Inverted with Marisa and Reimu. In a normal Gappy Stu fic, Reimu and Marisa are inseparable, acting as Those Two Guys. In Reel 1, Reimu and Marisa appear together in only one scene (outside of flashbacks) and exchange only eight lines of dialogue. Reel 2 gives them just as little screentime together. Possibly an aversion when you take into account that Reimu and Marisa never appear together in the games until the endings.
Vic, who only appears briefly in the outside world scenes, but it really kicks in when you realize he's a Gappy who escaped Gensokyo, but not after killing his former friend Arturo and then accidentally killing a field full of children in revenge against an innocent youkai.
When Brolli finds out Vic Chaos' backstory, Yuuka.
After the incident, Gensokyo as a whole: two villages have been virtually destroyed, an innocent boy has been killed, the "villains" who got away with it are being celebrated as heroes and can't come clean without causing another (even worse) incident, the real villain did it because she was fed up with everyone's mistreatment of the boy, and all of his friends have either a Heroic BSOD, cross the Despair Event Horizon, or have a Fate Worse than Death. The only people that viewers can't feel sorry for are Jack, for representing everything people do hate about Marty Stus, and Yukari, who only gapped Brolli, and all of the other children, for pretty sinister reasons.