Often, in these fanfictions, there are new character relationships. For example, Naruto characters might form unexpected alliances or rivalries with the Ronin Warriors. This can lead to some very interesting plot twists and character development. Also, the fanfictions can explore different moral and ethical concepts as the two different cultures collide. The Ronin's honor - based system might contrast or complement the ninja's way of life in Naruto. Another aspect is the new combat styles that emerge when the powers of Naruto characters and Ronin Warriors are combined. This can make for some really epic battle scenes.
It's hard to say exactly what's new without reading it. But it might feature never-before-seen battle scenes or deeper exploration of the characters' backstories.
I also like 'Naruto and the Ronin's Code'. This fanfiction delves deep into how Naruto might be influenced by the code of the ronin. It shows his growth as he tries to understand and incorporate some of those values while still staying true to his ninja way. It has a great character development arc for Naruto.
Well, perhaps there's a villain who has the ability to steal the essence of both the armors of the Ronin Warriors and the transformation items of the Sailor Scouts. The two groups have to team up. The Ronin Warriors could teach the Sailor Scouts some combat skills, while the Sailor Scouts could show the Ronin Warriors how to use magic more effectively. They'd then go on a journey to recover their lost powers and defeat the villain.
I think Ryo of the Ronin Warriors and Sailor Mars could be an interesting pairing. Ryo is hot - headed and powerful, and Sailor Mars is also strong - willed and has fire - based powers. Their personalities might clash at first but then they could learn to respect each other's abilities and work well together.
The movie Ronin indeed takes inspiration from the graphic novel. They share core elements and themes, but the movie might have made some adaptations for the big screen.