The most interesting aspect is the clash of different fighting styles. Naruto's ninjutsu - based combat and Baki's grappling are so different. It's exciting to imagine how they would interact. Another aspect is the potential character development. Naruto could learn about a different kind of strength from Baki, and Baki could gain a new perspective on combat from Naruto.
In this fanfic, Naruto and Baki could start off as rivals. Naruto, with his never - give - up attitude, would not back down from a challenge against Baki. Baki, being a confident grappler, would also be eager to prove himself against Naruto. However, as they interact more, they could discover that they have a lot in common. They both strive for strength in their own ways, and they could come to respect each other's abilities. This could lead to a deep friendship where they support each other in future battles.