Well, you could explore a scenario where a magical wine has the power to either fuel the aggression in war or pacify the soldiers. In 'of wine and war fanfiction', it might be interesting to have a group of soldiers who find an ancient cellar of wine during a battle. This discovery changes their perspective on the war as they start to see the value in the finer things of life and question the purpose of the fighting.
One idea could be a story where the wine is used as a diplomatic tool during the war. Maybe two warring factions come together over a shared love of a rare vintage, and this leads to a temporary truce. Another could be a character who uses wine-making skills learned before the war to survive in a war - torn land, trading the wine for resources.
You could also focus on the cultural impact of the spoils. If a society gets a lot of art or knowledge from the spoils of war, how does it change their own culture? It could lead to a fusion of different cultures or cause internal strife as some resist the new influences.
One interesting idea could be exploring the backstories of the minor characters. For example, the life of a regular Gear soldier before the war, how they were recruited, and their families. Another idea is to create an alternate universe where the Locust and humans form an alliance against a new common enemy. It could change the whole dynamic of the Gears of War world.
A cool god of war fanfiction could be set in an alternate universe where the gods have different personalities. For example, Zeus could be a benevolent figure instead of the antagonist. Kratos might have to deal with this new dynamic and how it affects his own journey of vengeance. You could also write about a fanfiction where Kratos has to train a young apprentice, passing on his skills and wisdom.
A God of War 4 crossover fanfiction could involve crossing over with the DC universe. Kratos could find himself in Gotham City and have to deal with the likes of the Joker and Batman. His no - nonsense attitude and brute strength would be a contrast to the more morally complex characters in the DC world. Or perhaps a crossover with the Legend of Zelda series, where Kratos and Link could exchange combat techniques and embark on a joint adventure.
One idea could be a crossover with Norse mythology outside of the God of War series. For example, Kratos could meet Thor from the original Norse tales. Another could be a crossover with Greek and Roman mythology, where Kratos encounters some of the forgotten or lesser - known Roman gods. Maybe a crossover with a popular fantasy world like Middle - earth, and Kratos has to face off against some of the powerful beings there.
A plot could revolve around a love story between a noble from one kingdom and a commoner from an enemy kingdom. Their relationship could be a catalyst for peace or more conflict. For example, they might try to secretly broker peace treaties while hiding their relationship from their respective kingdoms. This would add a layer of drama and secrecy to the fanfiction.
One idea could be a ment with special powers emerging and changing the power dynamics in the war. For example, a ment that can read minds and uses this to outwit the enemy. Another could be a group of ments from different factions coming together to try and stop the war, facing many challenges along the way. Maybe a ment discovers a hidden weapon that could end the war but has to decide if using it is the right thing to do.
Perhaps a story where the God and Goddess of War have a sibling rivalry. They compete for the most powerful weapon in the war - realm, and in the process, they have to face various challenges and make difficult choices that test their loyalty to each other and their own beliefs.
Well, for 'at war with nature fanfiction', a plot could involve a character who has a special ability to communicate with nature but is forced to use that ability to fight nature instead of befriend it. Maybe because some dark magic has corrupted the natural order. Or a story where an entire city is besieged by a horde of oversized insects and other creatures that are acting out of their normal behavior. The people have to figure out how to stop this onslaught and restore the balance. Also, a group of adventurers could accidentally awaken an ancient elemental force that now wants to destroy all human civilization as it views humans as a threat to nature.
For Gears of War 4 crossover fanfiction, a crossover with the Star Wars universe would be really exciting. The Gears' tough and gritty combat style against the backdrop of the Star Wars galaxy. The Jedis and Siths could interact with the Gears in various ways. Maybe the Gears would get involved in a conflict between the Galactic Republic and the Separatists, using their own brand of weaponry and tactics.