Ok, I've been trying my best on this ladder (though my team is really starting to succumb to some massive hax =[), but I guess I should contribute some stuff to this thread.
First off, Fire resisters such as Vaporeon, Milotic, Gyarados, Swampert and Suicune have been given massive pushes in their usage on the Suspect Test ladder. I have a feeling that this is due to the huge surge of Heatrans that are now on the ladder (including my own :D).
Without Garchomp's huge usage as a problem on this ladder, I'm really starting to see just how much Gengar is used, and if statistics do come out for this ladder, I believe that Gengar is going to be in the #1 position without a doubt. I think that the spike in usage for Gengar comes from less of a need for Choice Scarf, thanks to the lack of Deoxys-S. Also, it's not as easy to beat anymore, because now it's able to run Substitute over HP Ice, which is a big pain, since it's hard to Thunder Wave it now.
That's all I can remember for now. However, one prediction that I have is that 6-pokemon sweeper teams are going to become popular again on this ladder. Without Deoxys-S there to wreck them, they're going to start running wild, though it may not be as horrendously easy to win with them without the sweeping power of Garchomp to screw over teams.