@ghostfacekiller39
Rarity was actually the first character I considered a favorite of mine. In part because (as a person who considers himself thoroughly uncreative) I admire those who can bring their imaginings to life like she does, but I also think she has a lot of depth that goes unexplored.
Case and point, I was thinking recently about one of the first episodes she has a significant role in, season one’s “Look Before You Sleep”. When it first came out, I thought it was an OK episode. Good moral, amusing shenanigans… that sort of thing. But when I began thinking about it again, with the benefit of an additional 4 seasons to draw on, I began to see some subtleties that, while probably unintentional, change a way a lot of the episode looks. For instance, I always found it a bit odd that Applejack and Rarity would be at each other’s throat as much as they were, especially considering that only a few episodes earlier they had joined with the group to literally save Equestria. Yet when we remember that Applejack had once lived in the big city as a filly (which she left because it didn’t feel like home), and recall her disdain for the somewhat vapid interests of the upper class types she basically lived with at that time, it’s easy to imagine that Rarity (with her carefully cultivated accent and dreams of sophistication and glamour) remind Applejack of those self important ponies she didn’t like. And as for why Rarity would be at odds with Applejack herself, I feel like it is because (again, as we later learn) Rarity’s dream is to be a trendsetter. The type that others look to for guidance. A pony everypony should know. And Applejack, in Ponyville, is exactly that. Indeed, the first episode after the series pilot had the Ponyville mayor literally holding a ceremony to honor AJ, and many of the other episodes of season one are all about Rarity trying to get ahead, only to have it backfire on her (Fluttershy’s modeling career, the Gala dress incident, and so on).
So at that point it is possible to imagine that the scenario is far more than a simple disagreement over cleaning, but actually issues with Applejack sees Rarity, and how Rarity compares herself to Applejack. And fittingly, the episode solution works that way as well. The problem is ultimately resolved by Applejack revealing to Rarity that she isn’t always able to fix things on her own, and Rarity showing Applejack that she would help, unlike the Canterlot/Manehattan types AJ believed her to be like.