Another concept might be Ichigo crossing over with superheroes from Western comics. Picture Ichigo fighting alongside Superman or Batman. His unique reiatsu - based powers would be a great contrast to the superhuman abilities of the superheroes, and they could learn from each other's fighting styles.
One interesting concept could be how Ichigo's powers interact with the unique abilities in RWBY. For example, his Soul Reaper powers might contrast or complement the Dust - based abilities in RWBY. Maybe his Zanpakuto could have an unexpected reaction when used in the RWBY universe.
Well, in 'ichigo is a god crossover fanfiction', perhaps an interesting concept is the moral implications of his godhood. He might struggle with whether to use his new - found powers for good or be tempted by the darker aspects of omnipotence. Also, the way his character design might change to reflect his god - like status, like having a more otherworldly appearance or aura.
One interesting concept could be the new powers Ichigo might gain in the crossover. For example, he could combine his existing Soul Reaper powers with those from the other crossover element in a unique way, like having a new type of Zanpakuto ability.
One interesting concept could be Ichigo crossing over into a different anime universe. For example, he might end up in a world full of magic like in 'Fairy Tail'. He could bring his unique Soul Reaper powers and have to adapt to the new rules and powers there. Another concept could be Ichigo teaming up with characters from other shows to fight a common enemy. This would lead to some really cool battle scenes and character interactions.
The cultural mash - up is also cool. 'God' often represents a different cultural or spiritual concept, and when combined with Ichigo from a specific anime universe, it can create unique scenarios. Maybe it could involve different mythologies clashing or merging in the fanfiction.
One interesting concept could be Ichigo's power evolution in a crossover setting. Since he's immortal, he might have the time to fully master and combine his various powers in unique ways. For example, his Shinigami, Hollow, and Quincy powers could blend more seamlessly, creating new and unforeseen abilities.
A cool concept might be Ichigo having to adapt to an Asian - inspired magical realm that has its own set of rules and powers. This could lead to unique character development as he tries to figure out how to use his powers in this new environment.
One interesting concept could be the exploration of Ichigo's new powers in a 'dark godlike' form. It might involve him having enhanced combat abilities that are both awe - inspiring and a bit terrifying.
Another concept is the Joker's influence on the story's tone. In a crossover with a more light - hearted or comical universe, the Joker could still bring his dark and menacing presence, which would create a really interesting contrast. His actions and words could disrupt the normalcy of that universe and force the other characters to deal with a level of chaos they're not used to.
Another concept could be a time - travel - based crossover. Suppose Doraemon crosses over with Doctor Who. They could both explore different time periods and dimensions together. Doraemon's Time Machine and Doctor Who's TARDIS are both means of time travel, but they have different functions and appearances. Their combined adventures would be full of mystery and discovery.