This adds the Kanto Pokemon Centre maps, which combined with the Nihon versions, means every region has its own layout. This should make for some very immersive gameplay, no?
This adds the Pokemon Centre infrastructure for Nihon and Silent Hills's one.
For all future Nihon Pokemon Centres, they must refer to the 2F one for the warp, and the map blocks for 1Fs should use the Nihon variant.
Kanto will follow suit (eventually). The aim is to make a more immersive region structure.