Maybe there's a competition in the RWBY world similar to a rock concert battle. Different teams, including our main RWBY characters, compete by performing music - inspired by 'We will rock you'. And the winner gets some kind of special reward or power - up.
You can try fanfiction websites like Archive of Our Own (AO3). There are a large number of RWBY fanfictions there. Just search for 'We will rock you' in the RWBY section and you'll likely find some interesting ones.
In the world of Black Rock Shooter RWBY fanfiction, there are also some pairings that involve more than two characters. For example, a polyamorous relationship between Black Rock Shooter, Ruby, and Weiss. This allows for complex relationship dynamics and exploration of different emotions. However, it's important to note that different people have different preferences when it comes to pairings in fanfiction, and new pairings can emerge over time as the fanfiction community continues to grow and develop new ideas.
One interesting concept could be crossovers of the unique powers. For example, Black Rock Shooter's powerful armament and RWBY characters' semblances interacting in combat scenarios. Maybe Ruby's speed semblance combined with Black Rock Shooter's weaponry to take on a powerful foe. Another concept might be the exploration of different universes. How would the RWBY world's rules of Dust and Grimm affect Black Rock Shooter? And vice versa, how would Black Rock Shooter's world of the Otherworld impact RWBY characters. It could also involve character relationships, like how Weiss would react to Black Rock Shooter's stoic nature or how Blake would view her fighting style.
The aesthetics can blend really well. RWBY has a more fantasy - based aesthetic with its magic, different kingdoms, and the design of the Grimm. Black Rock Shooter has a more post - apocalyptic and edgy aesthetic. In fanfiction, this could be combined by having the characters travel between the two worlds. For instance, the RWBY characters might find themselves in Black Rock Shooter's desolate world and be amazed by the strange architecture and the dark atmosphere, while also bringing a bit of their own colorful and more hopeful aesthetic to that world.
One interesting crossover could be the combination of the unique fighting styles. In RWBY, the characters have their own weapon-based combat, while Black Rock Shooter has her intense, otherworldly combat moves. In fanfiction, they might come together to fight a common enemy that threatens both their worlds. For example, a powerful Grimm that has somehow found its way into Black Rock Shooter's dimension, and the two groups have to team up to defeat it.
Well, 'We Will Rock You' by Queen has an interesting back story. Queen was known for their unique and grand musical creations. This song was part of their repertoire to electrify the audience. The lyrics are simple yet very effective in getting people pumped up. It was released at a time when Queen was at the height of their popularity. The song was also a way for them to assert their dominance in the rock music scene. The back story also includes how it quickly spread beyond just being a concert song and became a global phenomenon, often associated with moments of victory and celebration in sports and other events.
To make it unique, you could give the characters in Harry Potter some rockstar - like qualities inspired by We Will Rock You. For example, Hermione could be a guitar - playing wizard who uses her musical talent to solve magical problems. Also, the setting could be a mix of Hogwarts and a rock concert venue. This would create a really different and exciting atmosphere for the story.
In a fanfiction, the We Will Rock You world could be merged with Harry Potter's. For example, the magic in the Harry Potter universe could be used to power the musical instruments in the We Will Rock You world. The Queen songs could also have magical effects in Hogwarts. The story could follow a group of students who discover this connection and use it to their advantage during a wizarding battle.