Hey Narrative, when you're done with Shurima and Mount Targon...
You should go back and fix up champions that still have the short paragraphs! They are as follows:

Now specifically Bard, Ekko and Tahm Kench need that long form lore since they were made with the character pieces in mind and haven't had that update yet, but you guys made them with the new lore in mind, so you know basically what would go in to this.
Sion has a character piece but lacks the long form lore, so there's so key and vitally important stuff missing for him.
Evelynn and Elise are sorta in their own little camps that are influenced by but not 100% tied in to the Shadow Isle's main powers at be, and could use some embelishment. I mean for Elise it's more talking about her (implied) Noxian origins and with Evelynn, well...she kinda just needs it.
Tristana's like Bard, Ekko and Tahm Kench but reworked, so you guys probably know the ins and outs of her place in the world, it just needs put to writing.
And finally Yorick. I know it's been said he's high on the rework list right now (despite the fact no one but me has faith in that) but honestly I feel that if you guys get a handle on Yorick's new lore before the rework's prepared, just put it out before hand. At least give him something y'know? He's been sitting in the corner, waiting for Riot's attention for so long, I feel like you should just put the new lore out there for him whenever it's ready, regardless of what state his reworks in at the time. That might be a terrible idea overall, but I dunno all of the inside details working at Riot and stuff, so I can only give what I feel would be the best solution to at least one of Yorick's problems.
Anyway that's just my thoughts. Once we're free of the single paragraph lores that are still kind of an issue for some of the champions, I feel that then it'll be best to return to establishing Runeterra and stuff.