A realistic reason to why there's no lore currently
Ok we all know Riot scrapped the big "Institute-of-War"-Idea. But on the other hand they are still trying to get a story out that unifies most smaller narrative strings in league-lore. If they were planning on keeping things "small" they could have brought out a lot of lore until now. (This statement implies that Riot actually HAS a competent lore team and not just a horde of monkeys with typewriters).
So they are going for some big stuff again... but what could possibly be the reason for such a massive delay?
Actually it's pretty simple: WE ARE STILL MISSING THE KEY CHARACTER FOR THE NEW LORE. One that sets things in motion. It's kinda the starting point of all new lore that seems to be tied to a certain champion/character fucking over the world as we know it. The last champ releases seem to set the stage for this (not all of them tho). Azir suddenly made Shurima relevant again, Kalista shows how the Shadow Isles take influence on the continent and Bard.
Well, Bard being here is the true indicator that shit is going to hit the fan soon. It's the only reason why he materializes. Since he won't be able to totally hinder the change from happening I guess the missing key character is something equal in power.
This is kinda the only thing that could be the reason for this massive lack of lore. (The only other option would be massive incompetence).
Ok, but who or what could this missing character be?
My guesses are:
1.) A darkin - Jepp old stuff, but they were mentioned in the Bard Q&A. Something about how Bards way of taking influence on the world is different from their ways. It seems that Lore department hasn't forgotten the mysterious race. 2.) Ao Shin - They previewed him so long ago, thinking they would release him soon, but then problems came up. A rioter confirmed that he's not scrapped and still being worked on some time ago. Is the ionian dragon maybe a key figure to new lore? 3.) ??? - Your turn guys, I'm running out of ideas.