^That's because they probably caught on to how annoying a Sash or Scarf Smeargle can really be. Dark Void is RIDICULOUSLY overpowered.
My prediction is we'll be seeing a lot of weather, mostly rain - Politoed and Thundurus will probably be very common. Yet, at the same time there will probably also be a lot of counter weather.
On top of that you have to make sure that your weather Pokemon is slower than your opponent's - if 2 Pokemon have weather abilities, the faster one activates followed by the slower one. That...will be pretty frustrating.
I might just stick with the same trollish Trick Room team that I ran last year. Although, since I have access to a lot more things now, that might change.
...bahahahahahahaha yeah right, not under VGC conditions