I suppose my talent spec must be somewhat uncommon then:
The World of Warcraft Armory
I've got 3/5 points in feral aggression, mainly for the improvement to demo roar. It doesn't hurt for bleed immune bosses or trash either, but I can verify that it does in fact keep non-talented warrior shouts off. Only one tank in my guild (of 3 warriors) has improved demo shout, actually. Quite surprised to hear that it's 297.6AP, as I had just assumed it was slightly over 300 on account of it beating a warrior's shout.
Anyways, as a high end raider with no interest in pvp, Brutal Impact is right out. Just about everything's stun immune anyways. 3 talent points isn't worth 10 rage from Intensity, and my mana doesn't run out in feral forms anyways. I don't powershift as much as I should, so natural shapeshifter wouldn't help me much either. I realize gaining even 10 energy is probably around 400-500ish damage (just off the top of my head estimate) but doing it about 10 more times with the talent is around 4k-5k damage, which is around 1.5% more damage. Rough figures and all that, but it just doesn't appeal to me.
With that said, you might as well take the whole feral tree and dump the last 3 into feral aggression.
Am I underestimating powershifting in 2.3?