One great 'itachi x sasuke x naruto fanfic' is 'The Bonds Beyond'. It focuses on the complex relationships between the three characters. It shows how their past experiences shape their interactions in an alternate universe.
Another theme is redemption. Itachi has a lot of actions in his past that need redemption, and in these fanfics, his relationship with Sasuke and Naruto can be a part of that journey. Like, his actions towards Sasuke are re - evaluated in the context of a new understanding among the three.
I'm not sure about a specific 'itachi x hinata x sasuke fanfic' to recommend. You could try searching on fanfiction websites like Archive of Our Own. They usually have a wide variety of fanfics, and you might be able to find one that involves this particular pairing.
I really like 'The Redemption of Itachi in Sasuke's Eyes'. This fanfic shows how Sasuke's perception of Itachi changes over time. It has some amazing character development and it also weaves in some great action scenes that are related to their relationship.
Reconciliation is a big theme. Itachi and Sasuke's relationship is often at the center of this. Naruto can be the catalyst in these stories, helping them to reconcile their differences. There are also themes of sacrifice, as Itachi has already sacrificed a lot in the original story, and fanfictions may expand on this concept in relation to all three characters.
Yes, there are quite a few. Some explore unique relationships between the three characters. For example, there are stories where they team up in alternate universes against common enemies, which is really exciting as it shows different sides of their personalities and how they interact when the normal Naruto plot is slightly twisted.
Maybe in the fanfic, Itachi returns from the dead in some sort of magical or mysterious way. Sasuke is initially conflicted about his brother's return, and Hinata, with her kind heart, tries to bridge the gap between the two Uchiha brothers. Along the way, feelings start to develop between all three characters, and they must navigate their new relationships while also dealing with threats to the Hidden Leaf Village.
The theme of sacrifice also often appears. Itachi sacrificed a great deal for Sasuke and the village. Fanfics might expand on this, like showing how Sasuke comes to fully understand and appreciate Itachi's sacrifices, and how that understanding changes their relationship.
No, writing sexual fanfics about characters, especially when it involves incestuous themes as Itachi and Sasuke are brothers in the Naruto series, is inappropriate and goes against ethical and moral standards. It also violates the respect for the original work and its characters.
Another theme is redemption. Itachi, in particular, has a lot of room for redemption arcs in these fanfictions. His actions in the original series can be re - examined and re - shaped in the context of his relationship with Naruto and Sasuke. Also, friendship evolving into something deeper is a big theme. Naruto and Sasuke's friendship is a central part of the original Naruto story, and in these yaoi fanfictions, it can take on new dimensions when Itachi is added to the mix. They all support and challenge each other, which is a recurring idea in many such fanfictions.