So to summarize, we've got the following elements covered:
Fire: 2
Air/Wind: 1
Ice: 1
Lightning: 1
Earth: 1
Gravity: 1
Darkness: 1
Light: 1
Aether: 1

While the following elements have yet to find a champion:
Water, Wood, Metal(?)

And I thought Valentia was more in Poland or Russia. Eh, I guess the map isn't exact, and doesn't have to be; as long as the Sanctum Cities are mostly defined, the setting's fine.