How about JohNo? Why is Johto not needed?
1. All the Johto mons are implemented on Pokemmo.
2. The two Kantos problem
3. More important priorities: Hidden Abilities, Legends, etc.
4. Overwhelming the new players with 5 regions now + 1 if the new Kanto is counted.
5. Too many NPCs and Gyms which would cause serious inflation problems.
I can go on, but Johto should be a meme instead of an actual goal.