Australia might be too big. It'd certainly be larger than any existing region.
The topmost New Zealand map could be improved a bit with additional routes joining the cities to be less linear. I don't know a lot about New Zealand geography but there is likely a better balance between those two maps.
Hmm... I'm not sure they will, looking at the lists. Blue had the Meowth, Vulpix and Sandshrew lines as exclusives, all of which have Alolan variants now, while Red had no such exclusive Pokemon. It doesn't balance out as well now.
Game Freak considers Let's Go Pikachu and Eevee to be mainline games, but not 'core' RPG games like Sun and Moon or the games coming next year. It's unclear whether Pokemon Go will have influence on games after the Let's Go games, but the core RPGs next year will not have Go influence, at least.
I would still be okay with the future Kanto idea that came up during leaks season but it'll be good to get away from the idea of going back there again. I want to see somewhere new. Somewhere that isn't Kanto or Sinnoh or Alola.
The Let's Go games aren't for me, but I came out of this whole thing a lot less disappointed than I thought I'd be for a Kanto-only game with Go integration. I'm optimistic about Pokemon's future. Graphically they look great, so Gen 8 should be even better, and if the newer Pokemon aren't going...