Hey Ewing,
Glad to see that you’re still playing the game. Many things have improved and many features were introducee. Though its not perfect, its definitely better than it was when it first launched. My IGN is PrimeMinister and if you ever feel like you need a helping hand in a quest or just general knowledge towards the game, Feel free to add me up! As far as guilds that have majority Australians I’m not quite aware of which are they, however in the guild I’m in, there are 5ish Aussies here however we are full 
As what the others have said, the road to 200 is a bit lonely, its best that if you see someone along the way, try to say hi to do quests to whoever is in the vicinity and you might just get a questing buddy to help you out. More activities at end games are ET, guild activities and many more, its highly recommended that if you can find a guild and experience some of the events that they have.
Cheers,
PM