The relationship between Sasuke and Naruto (now from Suna) would be different. Sasuke might view Naruto as more of a threat due to his Jinchuriki status. Gaara, in the Leaf Village, would probably be more friendly towards Sasuke, trying to be his friend. Also, the relationship between Naruto and Sakura would be altered. Since Naruto is from Suna, Sakura might be more hesitant or even fearful of him at first.
If the roles were reversed, Sasuke would be the one that Hinata might have a secret crush on. Since he would be the more outgoing and friendly one. And Sasuke would probably be more involved with the village kids, mentoring them like Naruto did. Naruto, as Sasuke, would have a more strained relationship with the Hokage. The Hokage might be constantly worried about Naruto's motives and actions. His relationship with Jiraiya would also change. Jiraiya might be more cautious around Naruto, instead of the carefree mentorship they had in the original story.
Sakura's relationship with the new 'Naruto' (Gaara) would be very different. She might be more cautious around him at first due to Gaara's past reputation. For Kakashi, he'd have to approach mentoring Gaara - as - Naruto in a different way. In Suna, Temari and Kankuro would have to get used to Naruto as their leader. They might be initially skeptical but Naruto's charisma would likely win them over.
A 'Naruto and Gaara Roles Reversed' fanfiction could start with Gaara being the one full of energy and constantly getting into trouble in the Leaf Village. He'd be eager to prove himself, much like how Naruto was in the original. Naruto from Suna would have to deal with the harsh treatment from his own village due to being the Jinchuriki. Their first encounter would be really interesting, as their personalities and circumstances are flipped.
The relationship would be very different. Instead of Naruto chasing after Sasuke to bring him back, it might be Sasuke trying to reach out to Naruto. Sasuke would be the more empathetic one, constantly trying to break through Naruto's cold exterior.
If Gaara and Naruto are brothers, it could lead to a much closer alliance between Suna and Konoha. The two villages might start sharing more resources, like ninja training techniques. For example, Konoha could learn more about sand - based jutsu from Suna, and Suna could benefit from Konoha's more diverse range of ninja skills.
Sasuke, in the reversed role, would develop in terms of his ability to forgive and his patience. He would have to be patient with Naruto's slow progress towards redemption. His character would become more about spreading hope and love in the face of Naruto's negativity. Naruto's development would be a long and arduous process. He would first resist Sasuke's attempts to change him, but as time goes on, he would start to see the error of his ways. His development would be marked by his struggle between his dark past and the new light that Sasuke is trying to show him.
Well, Sasuke's relationship with Naruto might change drastically. If Naruto starts to show snake - like traits along with his fox - related powers, Sasuke might be more suspicious or even more intrigued. He could see Naruto as a new kind of threat or a potential ally in a different way. Sakura, on the other hand, might be more worried about Naruto's well - being as these new powers could be more unpredictable.
The relationship between Naruto and the Raikage would be completely transformed. Instead of being just an ally or a foreign ninja, Naruto would be his son. This would likely lead to a more protective and perhaps more demanding relationship from the Raikage. Naruto's relationship with Killer Bee might also change. They could become more like brothers, with Bee helping Naruto to understand his new identity and the culture of the Hidden Cloud.
Well, if they switched roles, Gaara might be the one with the Nine - Tails inside him. He'd have to deal with the villagers' fear and hatred in Konoha. Naruto, on the other hand, would be the Kazekage in Suna. He'd face different political and environmental challenges. For example, Naruto would have to manage the water resources issue in Suna which is quite different from what he's used to in Konoha.
Sakura's relationship with Sasuke would likely change drastically. With Naruto gone, Sakura might turn to Sasuke even more for support, which could either bring them closer together or cause more friction as Sasuke may not be able to handle her grief. Kakashi, on the other hand, would be deeply affected. He might become more withdrawn, blaming himself for not being able to protect Naruto.