@Riot, you can't kill champions, then kill...
...side characters that you use in long-term. Characters like Rafel. I dont mean Rafel is necessary to die, but characters like Rafel. Create characters in lore that we don't have in game, make us love them, then use them for tragedy and realistic narrative.
You could easily use Setaka for 2v1 with Xerath. Nasus wants Setaka's help and then dies in a fight. But you just used her for 1 paragraph.
No one wants his/her champion dead in story and I agree. It wouldn't make sense game-wise either. But it makes it less realistic when only ones who die are non-important, 0 quote, generally weak af beings.
Use side characters. It would cause a little bit longer stories but I believe it would be worth.