My FM book is always in flux. But here are some ideas:
Prior to DvN, high Armor was hard to beat with an Aggro book. Then came Corrodes and negative Armor, specifically Rust, Acid Ball, and Devouring Jelly. With Academy, we also got Crumble, which gets around Nullify but is stopped by Arcane Ward. With the most recent expansions, Acid attacks are weaker thanks to Chitin Armor and Waterfall Cloak, but Armor can be ignored completely thanks to Critical Strike, which can be combined with Lion Savagery and/or Wolf Fury to really get your Piercing up.
Meanwhile, you can use your Thoughtspore(s) to get around Jynx, Falcon Precision to bypass defences, Decoys to fish for Nullify/Arcane Ward, Poisoned Blood to prevent healing, etc.
All of that said, my definition of "Aggro" may be different than yours. If you're looking for a book/strategy that completely ignores what your opponent is doing and still expects to win in 5-7 rounds even against a strong opponent, then I agree, it probably won't work. At least not consistently, and certainly not against an opponent who has seen it before. Otherwise, everyone would be running such Aggro books. In my experience, you need to react to your opponent unless/until you are confident that you can win a race to the finish.
I usually open with Battle Forge and expect at least 4-5 equipment out of it because I can't afford the actions needed to arm myself. That may not be as reliable as the PvS meta stabilizes (e.g. with Swell, Water Elemental). And I have a lot of specific counters to books I expect will give me trouble: Obelisk and Orb for swarms, Sleep(Spore) for annoying creatures, Eagleclaw Boots and Teleport(Spore) for walls/vines/push/kiting, ways to neutralize strong guards (e.g. Mongoose Agility, Tanglevine + Astral Anchor, Knockdown, etc), and whatever else might give you difficulty. Don't be afraid to put a utility spell on a Thoughtspore, like Dissolve or Dispel or Force Push, to act as a deterrent in a specific matchup if nothing more. Don't forget to include some spike healing (e.g. (Minor) Heal), passive healing (Regenerate and/or Vampirism), and be prepared to reveal Forcefield when you are about 50% damaged). All these are in my "Aggro" FM book and see a lot of use.
