I think this could also apply to the Void and the Shadow Isles
A great shadowy threat is much more menacing when you don't know it's actual size, neither their actual goals and limitations. That's a problem I had when they revealed the origin of the Shadow Isles, and now the Void. For me, the Shadow Isles was just a mystery that was never meant to be solved, but now that we know the tragedy of the actual curse, doesn't seem as dangerous as before, because it doesn't seem as vast as we imagined before. Was the Shadow Isles a portal to the other side? The great mystery of beyond? Or something worse? No. Just an accident created by tragedy. The same with the Void. Before, it was imagined like a black hole that swallowed dimensions, and Runeterra was just one of them. Now, Runeterra is the only pocket of creation in an ocean of nothingness, and the Void seems almost scared of it.
For me, threats like these work better in the background, when you know it's there, but don't know what it actually is. The characters of Runeterra don't, of course. But we do, and so we can't feel the same terror and ask ourselves the same questions as them.
What do you think?