I feel more excited about exploring well-developped undergrounds. Urban reconstruction Most likely means that we're building back the city After the ultimate weapon exploded, so We Evacuated to the undergrounds and Tree-Xerneas protected us. only having a city may also mean developped insides for houses, Hopefully ending the trend of lore-based doors. No one cares if someone lives without a bathroom and a room, the player Never EVER sleeps, can run 792 Marathons just to get some Shiny long-cycle-hatching egg, and, this time literally, Never ever sits. There are benches, but Most people dont use them, Cause They are pointless. another thing that would be great is having wild pokemon everywhere in the city, catchable ones unlike SV, but I also think that You could have poké transporter in base XY in lumiose so riding pokemon could be a nice feature to the game. The map will obviously be bigger, You dont make a whole game out of a city, No matter how big the city can be in base games, a full game will always be bigger. Megas are coming back, and I can't Wait to finally use mega Gallade (unlike just admiring it in pokémon home) and i'd Add that just Because a map is proportional doesnt mean it won't gET bigger At all