Sancus looked up Burnout in the data parse, and looking at the aura applied it is definitely 25% on the BONUS crit damage, not on the total. It is the exact same aura as Spell Power.

Sorry for the late reply, gentlemen. Concerning AoE, I may stand corrected with Molten Fury not influencing AoE, it's been a while since I AoE'd anything (though I do seem to recall last AE's a little bigger, perhaps the cap was loosening due to deaths and I'm over-romanticizing)

The percentile increment was noted in a Lock thread, probably the PvE Compendium, where there was a lot of aggressive exchange of words, which culminated in "there is only one way besides crit, that you can surpass the AoE cap, and that's by CoS every single mob" which then sparked a different discussion on whether or not there was a point on having one lock CoS vs SoC, and how many casters/targets is the break-even point.

If you'd like to check this for yourself, the easiest to do is pull everything, have a lock do a CoE on one mob, and Blizzard. Provided you're at the cap (easy, pull a helluvalot), you'll see a consistent number, which will be less than the number you see vs. an uncapped amount, and one single bigger number, by 10% ideally.

As for this, it's very, very interesting. Let's look at spell-scaling through leveling. Assuming, of course, that the numbers here are the -last- rank we get before 80 and not an intermediate rank.

Current fireball, base, average: 815. At 80: 1010. Net increase:.... 23.9%
Current Missiles, base, average: 280. At 80: 360. Net increase:..... 28.6%
Current Pyro, base, average: 1065. At 80: 1350. Net increase:....... 26.8%
Current Frostbolt, base, average: 655. At 80: 830. Net increase:... 26.7%
Current Icelance, base, average: 174. At 80: 238. Net increase:.... 36.8%

What becomes obvious, is there's some consistent increase between 26.5 and 28.5%, with what's currently "weakest" getting more, it would seem. There's two issues, however, I have with the statistics... Firstly, how come Fireball scales so little. In scaling terms, Frostbolt seems to have scaled 11% more than fireball. Secondly, how come Icelance scaled so very much? This is immense and it shows dramatically given that Icelance is on the *3 treatment.

Thoughts:
1) Icelance scaling so much may be for PvP reasons, or possibly to ensure it works with WG. I'd assume there's a very real fear that at some gearing level, the WG->Frosbolt->Icelance get's outscaled by plain WG->Frostbolt->Frostbolt.
2) Fireball may be scaling so lowly, purely because the last rank was just too low level; if this is the case I expect there to be another rank before Xpac shipping; Immagine, we conventionally gain one fireball every 6 levels. If at WotLK we gain the last rank of Fireball at 75, we're just short of getting a fresh rank at 80, meaning we're a few percent back in terms of scaling.
3) Missiles scales better than the average, but it's not particularly pants-shitting. It's +damage scaling is still quite bad (ie. the same as it is now). It remains to be seen if mage creativity is enough to overcome boring and seemingly useless mechanics.
4) Pyro is still worthless.

That's exactly what I've been calling for aswell radikal. A mid-combat mindblast kind of spell. I don't even know what pyro is designed to be atm. It is not a very good opener or mid-combat cast. It's only remotly viable for arcane/fire mages, which is complete bs as the spell should actually be useful for the tree it belongs in.

Either make it a mindblast mimic or a soulfire mimic.