So when I inquired about this a couple of months ago, they explained how they don't rank their waitlist, hence it's name "wait pool". This, according to the admissions persons, means that every time a spot opens up, they compare all the applicants in the "pool" and make decision after that.
So in short, they don't rank their applicants in the wait pool.
On the bright side for you, my provisional offer from another school becomes firm after midnight and I get dropped from the Oz wait pool. Best of luck