No. There are important events in the Naruto universe that are not covered in Naruto Shippuden. Some of the earlier history of the ninja clans, for example, is only hinted at in Shippuden but not fully explored. The full story of how certain jutsu were created and passed down through generations is also not completely told in Shippuden.
Sure. The characters are a huge part of Naruto Shippuden fanfiction. Fanfic writers use the characters to attract readers who are fans of those characters. They might focus on a character's backstory that wasn't fully explored in the anime and expand on it. Also, the interactions between characters in the original show give fanfic writers ideas for different scenarios in their stories.
By their unique abilities. Naruto's Rasengan, Sasuke's Sharingan, these abilities can be the starting point for many fanfiction ideas. Writers can think about how these abilities could be used in different battles or situations not shown in the original.
One of the most popular is 'Naruto Shippuden: Sakura Hiden - Thoughts of Love, Riding Upon a Spring Breeze'. It's popular because it shows Sakura in a new light, with her own adventures and growth.
Well, in the 'Jurassic Park' novel, a lot of people die. The dinosaurs are the main cause, obviously. Some characters die in really gruesome ways, like being chased down by a T - Rex. Others are picked off one by one by the smaller but no less deadly velociraptors. There are also deaths that are a result of the park's infrastructure failing, which leads to people being in the wrong place at the wrong time and getting killed by the dinosaurs.
I'm not sure specifically which 'Mayuri novel' you are referring to. There could be various reasons for deaths in a novel, such as battles, diseases, or sacrifices. Without more context about this particular novel, it's difficult to list all the deaths.
In the 'IT' novel by Stephen King, there are numerous deaths. Many children in Derry fall victim to Pennywise, the shape - shifting evil entity. For example, Georgie, who is brutally killed at the beginning by Pennywise in the form of a clown. These deaths are often very gruesome and are part of what makes the story so terrifying.
I don't think it's strange at all. Naruto is a very curious person. Fanfiction can offer new perspectives on his own life and the lives of his friends. He might learn something new about himself or get inspired by the creative ideas in the fanfiction. It could also be a form of entertainment for him during his downtime.
A Naruto x Hinata fanfiction could focus on a mission they go on together during Naruto Shippuden. They are forced to rely on each other in a dangerous situation. Hinata gets injured protecting Naruto, and Naruto is filled with a new - found determination to protect her. This experience deepens their bond, and Naruto starts to see Hinata in a whole new light, leading to the start of their romantic relationship.
Well, normal Naruto Shippuden fanfics are likely to be centered around the adventures, growth, and battles of the characters. They might explore different what - if scenarios within the framework of the Naruto universe. But 'naruto shippuden diaper fanfic' is likely to be more of a novelty or a very specific and strange take on the characters. It might not have the same depth or connection to the original story as normal fanfics do. For example, normal fanfics could focus on how a character overcomes a difficult battle, while a 'diaper fanfic' would be more about a really odd situation involving diapers which has little to do with the main Naruto themes.