@Riot A lore-related gameplay/visual update will happen again ?

I think VGU update is necessary to the champions released 2009~2011.

To paraphrase something Riot said (I can't remember exactly what post or where, which is why I'm paraphrasing), Burning Tides and the events, changes and effects (Visual, Gameplay, Sound, etc.) was a HUGE risk and a resource-eating monster. This is why we haven't had events of similar magnitude since then, because Riot doesn't want to take big risks like that again. IMO, I'd be fine with another big event like Burning Tides, but that's me. A new 5V5 map, a la Butcher's Bridge, anyone? Perhaps associated with Demacia or Noxus, considering they haven't had their "Big" lore update yet, even? What I'm saying is, there are those in the community who have similar wants as what you state here, but Riot, as far as we know, doesn't want to take such a big risk as the Burning Tides event turned out to be from THEIR perspective.