The best way to express the new Piltover lore in-game would be updated VO's

I know it's not likely to happen, I remember reading once that Voice work is rather pricey, so you only tie it in to full on VGU's, but it would be awesome if it could happen one day.

Vi's already matches her character Orianna's could use an update to align her with her new lore Jayce could be more of a cocky asshole Ezreal's is fine to his character, but a little lacking nonetheless Same with Caitlyn

But that's just my two cents.