A more complex plot could involve Qrow and Ruby going on a mission together. They could encounter an ancient Grimm that is resistant to normal attacks. As they struggle to defeat it, they have to rely on each other's strengths and also face some internal conflicts. For example, Ruby might be too eager to prove herself and Qrow has to keep her in check while also dealing with his own self - doubts about being a good mentor.
One plot idea could be Qrow training Ruby in some special combat techniques that are unique to his own fighting style. This would allow Ruby to gain new skills and also strengthen their bond as family members.
One plot idea could be a gender - swapped Qrow in an alternate universe where she is a mentor to a new group of young hunters. She could have different relationships with the other characters, like a more motherly bond with Ruby. Another idea is that she is on a mission to uncover a conspiracy within the Huntsman academies, using her unique skills and charm.
In the realm of RWBY fanfiction, it's not uncommon for Qrow to be Ruby's dad. Some fanfic writers may be inspired by their similar combat styles, their connection through Ruby's mother (in some fan theories), or just the general chemistry between the two characters. It gives a different perspective on Ruby's character development and the overall story. For example, if Qrow is her dad, it could change how she views her family's past and her own place in the world of RWBY. It also might affect her relationships with other characters like Yang, as it would change the family dynamic within the group.
Yes, in certain RWBY fanfictions, the idea of Ruby being Qrow's daughter is explored. This can be an interesting take as Qrow is a very important character in the RWBY universe. His relationship with Ruby in such fanfictions might be explored in terms of him being a mentor or having a more personal connection due to their family bond. It could lead to different storylines where Qrow is more protective or involved in Ruby's development in a different way compared to the original storyline.
One idea could be Qrow having to protect an endangered species all on his own. Maybe he discovers a unique Grimm - like creature that is on the verge of extinction and he has to fend off other threats while trying to understand it. Another could be that Qrow is part of a mission to save a group of people who are considered 'endangered species' in the RWBY world due to some new threat, and he has to use his skills and experience to lead them to safety.
One idea could be Ruby discovering she has some cheetah - like abilities. Maybe she's faster than ever and has to learn how to control this new power. It could add an interesting dynamic to her combat style and how she interacts with her team.
A third plot idea could be Ruby having to face an ancient vampire threat that is related to her new condition. Maybe she discovers that she was turned into a vampire as part of a bigger plan by an evil vampire lord, and she has to stop this villain while also coming to terms with her own vampirism. This could involve her learning about vampire lore and using it to her advantage.
One plot idea could be Ruby discovers she has werewolf abilities during a mission in a forest. She has to learn to control it while still fighting the Grimm. Another could be that there's a curse in Beacon Academy that turns Ruby into a werewolf, and her friends have to find a way to break the curse without hurting her.
One idea could be Ruby having to relearn her combat skills while being deaged. It would add an element of struggle and growth as she tries to regain her former abilities. Maybe she forms new friendships with characters she already knew in a different way because of her new, younger perspective.
A really interesting plot would be if Ruby's Reaper form was somehow connected to an ancient prophecy in the RWBY world. Maybe it was foretold that a Reaper - like figure would either save or doom Remnant. This would put Ruby in a very difficult position, with different factions having different views on her and her new form. Also, a plot where Ruby has to team up with some unlikely allies while in her Reaper form to take on a common threat could be cool. These allies could be former villains who see the greater danger that requires Ruby's power.
One plot idea could be Ruby discovering she has werewolf abilities during a mission. She has to learn to control it while still fighting Grimm. Another could be that in a werewolf form, Ruby has enhanced senses that help her track down a powerful and elusive enemy. Or perhaps she forms a pack with some of her friends who also get werewolf-like powers and they have to protect Vale from a new werewolf - Grimm hybrid threat.