I would NOT give Flareon Flare Blitz. It's a recoil move, and Flareon only has 65 base HP. It couldn't handle the recoil.
GF is going to have to create a new move to make Flareon viable - something at least on par with Leaf Blade or X Scissor or the like - a widely available physical Fire move with no consequences and at least 80 base power and at least 10 PP.
Actually though, while that'd be nice (and I would be willing to bet that GF will do exactly that in XY, along with a similar Electric move for the likes of Luxray), that's not the way I'd fix Flareon.
What I'd do would be to add an entire set of hold items that swap one stat for another. That'd help out a lot of pokemon - not just Flareon - and it'd make the metagame much more interesting, since you could never be sure what stats were what. And I think that, in the long run, it'd still be balanced, since any pokemon that was holding one of those items wouldn't be able to hold anything else - Lefties, Choice Band, Life Orb, whatever.
The way they'd work would be simple - they'd literally, simply, just swap one stat for another. For instance, put the one that swaps Special Attack and Speed on Flareon and it'd still have that base 130 Attack, but instead of wasting the 95 on Special Attack, it'd be on Speed instead, where it could do some good, and its Special Attack would be 65, but on a physical set, that wouldn't matter anyway. And though I'd still like to (and expect to) see a good base 80 or so no-consequence physical Fire move, with 95 speed to go along with that 130 attack, Flareon would already be better off, even with just Fire Fang.