New lore, or just general lore accessibility

What are the odd's of us getting new, in depth story's and lore for some of the older champs, rather then lore focused on all the newer champs coming out? i understand why they're getting it, being new and needing to fit in the story and all, but i was just looking at the universe map hungry for lore for some of my champ pool, and i noticed that malzahar, for example, isn't even featured on the map. not, like, "doesn't have any stories" (although he doesn't really but i digress), but like he isnt even listed as one of the native's to shurima on the map at all. I love the lore of the game, and i understand it's been a bit messy with lore being redone and retconned for numerous reasons, but i really wish there was more on some of the champs that don't have a ton. Ryze pops up all over the world map and is featured in numerous stories, but some of the older or less popular one's are lucky if they're even remembered.

EDIT: my map finally loaded the void section, so i found him in there now. im glad malz was literally just forgotten in the universe map lol now im just more interested in the odds of us getting in depth lore.