On the note of accents, there are plenty of Aussies who're willing to voice act, they tend to be in Australia, but you know, that's the problem with Aussies.
I seriously wanted to mute Dead Island, my brother was playing and only got as far as the bit right at the start where you get your first weapon (the oar/paddle) and it was bad.
We kept cringing and saying, "Crikey Moses!", "Stone the flamin' crows!", "Bluddy Hell!", "Geez, Leweeze!", "Sheeeeelah, bring us a beeeer!"
Also, she didn't really look much like an Aboriginal, more African. I found that frustrating, it would have been nice to have a decent Aboriginal character in a game.
Lastly, Polish Devs, in Australia we don't get pissy at people for being Aboriginal and successful. (At least no one I've ever met does). It makes no sense, unless the game is set in the past about 10 years or so.
I'm not going to pretend that there's no racism in Australia, we're not that cool, but it's not as bad as it was portrayed in that chick's origin story. I don't know of anyone who'd actively give someone a hard time for being Aboriginal, (or a female copper for that matter) you'd get sacked and verbally abused by your co-workers for being a douche.
At the moment, the racists are all attacking people who look middle eastern/Arabic.