Well, one possibility is that future Naruto has some sort of warning about a great danger that is coming to their present time. So, he travels back to meet Team 7 to prepare them. Team 7 would then have to deal with the knowledge that they are somehow crucial in preventing this future threat. And of course, there would be a lot of emotional moments as they see what Naruto has become.
Well, in this fanfiction scenario, Team Minato could initially be shocked to see Naruto from the future. Naruto might introduce them to new ninja techniques that he has developed over the years. And there could be a lot of emotional moments as Naruto reflects on his relationship with his former sensei, Minato. Also, they could team up to face a new, powerful enemy that threatens the future of the ninja world, with Naruto guiding them using his future knowledge.
Sakura might be the most surprised. She has always been very close to Naruto, and seeing him as a powerful future version would be quite a shock. She might be amazed at how he has developed his skills and also how he has changed as a person.
In a fanfiction where Team Minato meets future Obito, it could be a very emotional encounter. Minato might be shocked to see how Obito has changed. Obito, having experienced so much in the future, could bring warnings about future disasters. For example, he might warn about the upcoming threats to Konoha. Team Minato would have to grapple with the knowledge that Obito is no longer the person they once knew.
The relationship between Naruto and Sasuke could become more complex. If Sasuke's future self has accomplished great things but at a cost, Naruto might question his own ideas of success. For Sakura, seeing her future self might make her more assertive in her relationship with the boys, especially if she has become a very respected ninja.
They could embark on a journey to stop a powerful dark force that was unknown in Minato's time. Naruto, with his future knowledge, could lead the way and show Team Minato new ways to fight.
Well, Sasuke might learn from his future self about his family and how his actions in the future have either helped or hindered the Uchiha legacy. Sakura could discover if she has achieved all her medical and combat goals. It could be a story full of revelations, self - discovery, and perhaps some warnings about the future.
One interesting scenario could be that their future selves are not what they expected at all. Maybe Naruto's future self is not as happy as he thought he would be. Sasuke's future self could be facing new challenges that he didn't anticipate. Sakura might find that her future self has made some sacrifices she hadn't considered. This would make them re - evaluate their current paths.
Well, it could be that future Kakashi warns Team Minato about upcoming threats. He might tell them things they need to do to change the future for the better. Like, he could inform them about certain enemies they should be more cautious of, or secrets about the ninja world that they are yet to discover.
Sasuke would also be a likely candidate. His journey is filled with so many twists and turns. His future self could show him an alternate path or confirm that the path he is on is the right one. Maybe he becomes more at peace with his past and his clan.