The fact that so much of these Pokemon get STAB Outrage paves a way for so much new mixed sets.
Mixalga no longer needs Brick Break to get through Blissey and can now take a more physical route with mixed attacking in addition to the special mixed attacker set it already has.
Palkia can now 2hko Blissey with Outrage which means it no longer has to fear Groudon's sunlight ruining it's Aqua Tail.
Latios getting Outrage means it can run on a Life Orb set capable of 2HKOing just about every wall in Ubers.
Platinum wasn't too kind to Blissey or stall in general as far as Ubers is concerned.
Mixalga no longer needs Brick Break to get through Blissey and can now take a more physical route with mixed attacking in addition to the special mixed attacker set it already has.
Palkia can now 2hko Blissey with Outrage which means it no longer has to fear Groudon's sunlight ruining it's Aqua Tail.
Latios getting Outrage means it can run on a Life Orb set capable of 2HKOing just about every wall in Ubers.
Platinum wasn't too kind to Blissey or stall in general as far as Ubers is concerned.