The most exciting scenario would be when Naruto goes full Nine - Tails mode and Todoroki uses his maximum ice and fire combination. Naruto in Nine - Tails mode is extremely powerful, with his chakra radiating and his physical abilities enhanced. Todoroki, when he combines his ice and fire, can create a powerful and unpredictable force. The clash between Naruto's brute strength and Todoroki's elemental control would be visually stunning and full of intense action. The environment around them would be completely transformed, with the ice melting and the ground shaking from Naruto's power.
One idea for a Naruto vs Todoroki fanfic could be that they are brought into a strange new dimension by some sort of magical entity. Naruto starts off with his usual energetic self, trying to figure out what's going on. Todoroki, on the other hand, is more cautious. Naruto might start with a simple Rasengan attack, but Todoroki uses his ice side to block it. As the battle progresses, Naruto realizes he needs to up his game and taps into his Nine - Tails chakra. Todoroki then decides to combine his ice and fire powers in an attempt to counter Naruto's new - found strength.
I think the manga is more exciting. It gives you a raw and detailed experience of the battle.
In a fanfic, it really depends on how the author writes it. But if we base it on the original series' power scaling, Naruto has a higher chance of victory. He has learned from many battles and has a wider range of abilities compared to Jiraiya. Also, Naruto has a strong will that could give him an advantage when facing his old master in the Edo Tensei form.
One exciting moment could be when Naruto first faces off against Gilgamesh's arsenal from the Gate of Babylon. The sight of all those weapons being summoned would be quite a spectacle.
One exciting moment could be when Naruto and Sasuke combine their powers in a new and unexpected way. For example, they might create a unique jutsu that gives them an edge against Kaguya. It's always thrilling to see how they work together, especially considering their complex relationship.
One exciting moment could be when Naruto first unleashes a new jutsu. It would catch Sasuke off - guard and show his growth. Another moment might be when Sasuke activates a new level of his Sharingan, making the battle more intense. Also, if Naruto manages to break through Sasuke's cold exterior and make him remember their bond, that would be a great moment.
One exciting moment could be when Naruto first realizes the full extent of Lee's taijutsu skills. It's a moment of shock and respect. Another could be when Naruto starts using his clones in a new and unexpected way to counter Lee's attacks. It adds an element of surprise.
Well, it really depends on how the fanfic is written. If the Avengers are united and at their full strength, they would likely overpower Ross. They have superhuman abilities, advanced technology, and great teamwork. However, if Ross has some sort of powerful weapon or strategic advantage in the fanfic, he could potentially put up a good fight.
I'm not sure specifically which one is the absolute longest. There are many great alternate scenario Naruto fanfics out there. You could try searching on popular fanfic platforms like FanFiction.net or Archive of Our Own. They have extensive collections and you can usually sort by length to find some of the longer ones.
I think it's subjective. If you love the original Naruto storyline and characters, you might lean towards that. But if you're into new developments and the next generation of ninjas, Boruto could be more exciting for you.