I think this will be consistently great, probably ou, what with all the new toys it gets. Yes, there will be things that counter it, but the same can be said for even the most used Pokemon. Look at Heatran and Mence. I just hope that it doesn't get over-hyped and ergo disappoints. Still, what with the apparent shift to slower, immensely powerful Pokemon I can see super fast Blazikens being very, very useful in destroying these Pokemon, like Shanderaa.
Bullet/sucker punch resist, HJK, Swords Dance, Flare Blitz, Cheer Up, Claw Sharpen, Nitro Charge and of course Speed Boost. The king of chickens may finally be back.
Anyway. Here are two sets I can see being useful.
Swords Dance
Speed Boost
Life Orb/Focus Sash
Adamant, 252 Atk, 252 Speed, 6 HP
Swords Dance (duh)
Flare Blitz
Hi Jump Kick
Stone Edge/Shadow Claw/Quck Attack
Self explanatory, really. Brute, massive overwhelming power, with the choice of which move for the final slot being game deciding. Shanderaa is crushed by the first 2 (se/sc) look at it, but SE for dragons and Dos, SC for things like Slowbro, Quick Attack to hurt priority users (but not ES, with it's newly increased priority).
Cheer Up
Speed Boost
Life Orb
Rash/Mild, 252 SpA, 252 Speed, 6HP
Cheer Up,
Fire Blast,
Superpower,
Solarbeam
I don't know how so many have overlooked Cheer up (boosts both offenses). This set has it's obvious flaws, but it's just off the top of my head and I'm sure some ubergenius will fix the flaws in time.
For other toys, I wonder if Nitro Charge+blaze+Choice band/SD would be viable.