One of the things that didn't contribuited to Gen VI Pokemon was that Kalos' Pokedex was that the region was divided itself into three sub-regions, so that means that Pokemon belonging to Central Kalos like Fletchling can only be caught on Central Kalos (Route 2-Connecting Cave) without Friend Safari.

And now that Alola is revealed that it has four islands, do you think it will badly affect the Gen VII Pokemon with bad distributions like Kalos? At least Pokemon like Oricorio is revealed that will appear on the four islands.