A really cool plot could be that there is a time - traveling element in the ichigo grand magic games fanfiction. A character from the future comes back to the Grand Magic Games to change the outcome for some greater purpose. This would introduce a whole new layer of complexity to the story, with characters having to deal with knowledge from the future and the consequences of trying to change the past.
Gray is also quite popular. His cool - headedness in the face of danger during the Grand Magic Games and his unique ice - magic abilities make him an interesting character in fanfiction. Also, his interactions with other characters, especially his friendly rivalry with Natsu, add a lot of charm to his character.
One idea could be a character from a different guild who has a hidden power enters the Grand Magic Games and disrupts the usual dynamics. For example, a young mage with the power to control time but doesn't know how to fully use it yet. This could lead to some really cool and unexpected battles and alliances.
Well, in some fanfictions, there are storylines where the Grand Magic Games are rigged. Natsu and his friends then have to expose the conspiracy while still competing. This adds a whole new layer of drama and intrigue. There could also be a story where a new type of magic is introduced during the games, and Natsu has to quickly adapt to be able to compete against those who already know how to use it.
One interesting plotline could be Natsu and Lucy teaming up in a really unique way during the Grand Magic Games. Maybe they discover a new type of magic that only they can use together, which gives them an edge in the competitions.
Perhaps a character from a small and unassuming guild has a hidden power that is awakened during the Grand Magic Games. This power could be related to an ancient magic that was thought to be lost. The character then has to learn to control this power quickly while also dealing with the pressure of the Games and the attention it brings from other guilds.
One idea could be Sasuke using his Sharingan to analyze the magic patterns of opponents in the Grand Magic Games and develop new combat strategies. He might form an unlikely alliance with a magic user who has a unique ability that complements his skills.
One idea could be Gildarts having a secret mission during the Grand Magic Games. Maybe he's investigating a dark force that's trying to disrupt the games from the shadows.
Perhaps Lucy gets transported to a different dimension during the Grand Magic Games. In this dimension, the rules are all messed up and she has to use her wits and the help of some strange new allies she meets there to find her way back to the real Grand Magic Games and continue competing. It would be a story full of adventure and discovery.
One idea could be to create an alternate version where a new, mysterious guild enters the Grand Magic Games. This guild could have unique magic that no one has seen before, which would add an element of surprise and intrigue. For example, they might have magic related to time manipulation, allowing them to rewind or fast - forward events during the games.
One possible plot could be that Naruto and his friends enter the Grand Magic Games by some strange magic portal. They have to learn new magic skills quickly to compete. Naruto might use his shadow clone jutsu in a creative way combined with magic, like having clones do different magic spells simultaneously.