Don't know why I never see this, and maybe it's a total shot in the dark. I was thinking of a mixed attacker set.
Def - 252
Sp A - 252
HP - 4
Life Orb/Expert Belt
The idea here is to see my Flareon have surprising bulk and very good coverage. I'm hoping a Choice Scarf will be deemed unnecessary so the Life Orb or Expert Belt can be put to use to dish some extra damage. It should be noted that nothing Flareon will fight in N/U will has immunity or resistance to the full set, and that it has very good super effective type coverage. That said, plenty of things could still kill it in 1 hit, correct?
He has a good chance to cause burn, the ability to take both special and physical walls, and hopefully a power/bulk combo that will prove tricky and force mistakes.
My favorite Pokemon, by appearance, anyway, so I want to find a way to kill things with him. I know, I'm shallow :P