>>43595567my "no Kyogre" hypothesis squares nicely with the fact that we don't have any art of "beta Kyogre", which indicates that it was actually created later in development.
The tension may in fact have been between air/sky and ground/water. This actually fits with the plot of the 5th movie, where a town gets flooded and …. fossil Pokémon attack? WHAT THE FUCK DO FOSSIL POKEMON HAVE TO DO WITH FLOODING? And the "Air Pokémon", which we know used to look like cocks (and the Pokedex entries mention feathers, but no feathers can be seen on the final design), save the day.