Uber pickups are now allowed at designated pickup points in Melbourne airport. Drivers will need to register via Uber to be eligible to receive pickup requests while in the airport. Check email from Uber for more information. More info here: http://melbourneairport.com.au/to-from-the-airport/other-bus-services/uber.html
Finally, some good news. Just hope that $4 charge gets passed on to the customer, or else it's going to come out of our pockets!!
It was great on Thursday, I got a ping twice as soon as I entered the holding zone. I could see about 10 cars in the queue but somehow I had priority. A completely different experience Friday, I've been there three times throughout the day almost 70-100 cars waiting on each occasion. I left empty after exactly 15 minutes. No point waiting more than that for a likely CBD trip. I can get such trips not too far from the airport anyway.
I tried it out Sunday afternoon after a drop off and had a 1 hour wait for a trip to Kew - I wasn't fussed as it wasn't a busy time for arrivals and I was only testing the waters. Sunday evening, there was a shorter queue and I waited under 10 minutes for a ride to the CBD. I had a drop off in Essendon later that night and noticed there were only 2 cars in the queue. When I arrived, there were 0 cars in queue so I received a trip within 20 seconds to Macleod. It's useful for me as I live closeby to the Airpot and can start a shift there. My best advice is to google incoming arrivals at MEL before making your way there. Ensure you only queue during a busy period.
I queue only if my number is about 50 or less, which normaly translate to about 30 minutes wait, give or take. I drive off if the number is more than 50, it's not worth the wait unless one has too much time to burn.