From what I saw from a quick Google there are at least a few Australia/NZ servers that are usually running near capacity. 10% of the game sales were there so I'm guessing there is an active enough community. --- I WARNED YOU ABOUT STAIRS BRO!!!! I TOLD YOU DOG!
This game actually has an amazing amount of players. I'm in west coast USA though, there's like 50 full servers <100 ping, and if I filter full ones out, there's still like 15 servers with open slots and a high amount of players.