I love maps. But the one thing I hate about maps is that they're flat. How does the right side of a square map join with the left side? Is there more undiscovered area? But when looking at it as a sphere, everything makes sense. If something is to the East, we can see where it meets the West.
With so many lore-rich areas in Runeterra, it is only fair if the whole League of Legends planet is portrayed as an actual world rather than just a continent