Actually the only reason to have Hoenn remade is for its story. Even if they don't have a large amount of Hoenn Pokemon in Gen 6, Almost 90% are available in Gen 5 with the last remaining 10% being in Gen 4 games are coded in game events. This excludes Gen 3's two Wifi Legends of course as those have never been given In Game events without the need to participate in some download even to unlock. So the only reason to remake Hoenn is for Graphic update and story update. Same can be said for Generation 1 games again as they are still on the same outdated graphics as Gen 3. Only thing we'd lose for the Gen 1 re-remakes is the Sevii Islands story which could be replaced with a different story altogether.