First off, some thoughts:
[20:23:52] @Syndrome: there's no reason to run crunch on it
[20:24:22] @Syndrome: flare blitz and wild charge take out every relevant psychic type and lati@s doesnt want to keep switching into flare blitz
[20:24:43] @Syndrome: its like a 3HKO on defensive latias with jolly after rocks
In my opinion, that typing is rather unfortunate, and a bit overused. Had it been pure Fire I'd have suggested Magic Guard. It would've gotten rid of the Stealth Rock weakness and the recoil from Flare Blitz and Wild Charge. Actually, no. I'm still going to suggest Magic Guard. It works too well. It can even play off of the species being the 'Legendary' Pokémon.
I'd also like to suggest Contrary. We could go for a specially based stat build and have it abuse Overheat. You know, kinda like how Serperior does with Leaf Storm. It's special movepool isn't anything to write home about, but something along the lines of Overheat / Flamethrower / Dragon Pulse / Hidden Power [Type] could work pretty well.
If I have anything else I'll make a separate post.