Every Pokémon obtained should completely be legal (indistinguishable from a Pokémon obtained in an official game, using PKHeX's legality checker as the reference as opposed to Game Freak's) once transferred to a Generation 4 game, with one outlier.No changes made should interfere with any link capability with Pokémon Ruby, Pokémon Sapphire, Pokémon FireRed, Pokémon LeafGreen, Pokémon Emerald, Pokémon Box Ruby & Sapphire, Pokémon Colosseum, or Pokémon XD: Gale of Darkness.
The highest design priorities are 100% compatibility in terms of: This is a modification of Pokémon Emerald intended to be an interpretation of the 'definitive' Generation 3 Hoenn concept while still fitting firmly within the official game ecology.
