He would surely meet Gaara. Gaara has had his own struggles and he might be able to understand Naruto on a deeper level. They could form an even stronger bond than before, with Gaara helping Naruto hide from those who might be looking for him in Suna.
There's also Kankuro. Kankuro is known for his puppet techniques. He might be intrigued by Naruto and his unique abilities. They could end up training together, with Kankuro teaching Naruto some of his puppet skills in exchange for Naruto sharing some of his own ninja techniques.
Suna's reaction would depend on many factors. If Naruto arrives during a time of relative peace between the two villages, they may be more lenient. But if there are existing tensions, it could be a different story. Some Suna ninja might recognize Naruto's potential and try to recruit him for Suna, while others would be worried about the political implications of sheltering a Konoha ninja.
He might meet Gaara. Since Gaara is the Kazekage of Suna, it's very likely that they would cross paths. Naruto and Gaara have a history, so their encounter could be filled with reminiscing about their past battles and how far they've come.
There's a possibility that Naruto meets some of the younger generation of shinobi in Suna. These new characters could be eager to learn from Naruto or challenge him to a friendly spar. He may also come across some of the elders in Suna who have their own stories and wisdom to share with Naruto.
There could be new characters created specifically for this fanfiction. Maybe a young Suna shinobi who becomes Naruto's guide in Suna, showing him around the village and introducing him to the local way of life.
One possible plot could be that Naruto runs away to Suna to escape some sort of danger in Konoha. Maybe there's a powerful enemy after him and he thinks Suna can offer him protection. He could also be running away from some internal conflict within Konoha, like issues with the villagers not fully accepting him still.
He might face many challenges on his way. In the desert, he could struggle with the harsh environment, like finding water and shelter. Also, he may encounter some Sand Ninja who might be suspicious of him. Maybe he'll meet Gaara and they'll form an unexpected bond, as they both have had difficult childhoods.
He could meet some of Iwa's powerful ninjas. Maybe Onoki, who could either see him as a threat or an opportunity. There might also be some young Iwa ninjas who are curious about Naruto and his abilities.
He might meet some of his distant Uzumaki relatives. There could be elders or other Uzumaki clan members who have valuable knowledge about his family and their special abilities.
There could be some old and wise shinobi in Suna that Naruto encounters. These shinobi could have stories about the history of Suna and its relations with other villages. Meeting them would give Naruto a broader perspective on the ninja world. Also, he might meet some civilians in Suna who are affected by the village's politics and shinobi activities. Interacting with them would make Naruto more aware of the real - life impact of being a shinobi in Suna.
He would surely meet Gaara. Gaara, having had his own experiences of being an outcast, would likely be one of the first to interact with Naruto. They could share their stories and become good friends.