!
I was expecting Tauros to be a big threat in Sydney, no one used it though. I was surprised at the amount of bulky water/Electivire combos in Sydney, as well as the complete lack of Countersash Gengars (I had the only one; the ability to OHKO an opponent's Weavile/other physical lead on turn 1, Destiny Bond the slower switch in, as well as the ability to OHKO stuff like slower Starmie is incredibly valuable when that may me all they have.)
For reference, here was the team I used for the majority of the battles (had a Weavile and Azelf in the wings, never got to use them though).
Latios @ Soul Dew
Timid
252SpA/252Spd/6HP
Draco Meteor
Thunderbolt
Grass Knot
Hidden Power Fire (it's Japanese and from a trade, take that how you will)
Gengar @ Focus Sash
Timid
252SpA/252Spd/6HP
Hypnosis
Destiny Bond
Shadow Ball
Counter
Metagross @ Shuca/Lum (depending on what I thought the opponent would be using)
252HP/252Atk/6Spd
Meteor Mash
Earthquake
Explosion
Bullet Punch