Having a story mode for every character might be a little difficult. Each one would have to be compelling, and most annoyingly - unique. That’s over 120 different plots, yikes!
It might be more reasonable to allow the creation of a customisable character that can explore different regions of Runeterra. Each region could then have its own plots and side quests relating to that region’s Champions - like, Ionia’s main story could be the invasion of Noxus, but there could be sidequests relating to other Champions that don’t seem to have as much to do with that plot, like Ahri, Jhin, Syndra, etc.
That’d also allow different regions to embody different themes. Like, washing up on the shores of the Shadow Isles, definite horror theme.
This would be such a great idea to let players explore and interact with places in Runeterra, it’d be hella immersive and give people a way better idea of what the different regions are like. What customisations are initially available to your character could also depend on their region of origin; so, if they were from Shurima, they’d have traditional Shuriman outfits, etc. It’d give a much better “feel” for the type of people actually inhabiting these different parts of the world.
Oooh, and every October the Harrowing could strike a random region, and nobody knows where it’s gonna hit.
Alright I’m getting carried away. Awesome idea!