Until about two maybe three years ago there were NO QF international destinations from Perth.
That's not quite true. Some years ago, QF had a bunch of international destinations out of PER, but competition and the DXB experiment killed them all off. As I recall, they flew to JNB, HRE, DPS, CGK, SIN, KUL, BKK, HKG (via SIN) & NRT. Any others?