Power Attack does improve with the character.
Many more feats should, but I don't remember any official book having rules for that.
Have you ever remembered something you read in one of the books and thought, "Hey, where the hell did I read that?" Then you go rifling through book after book, not finding what you half-remembered until you start to think perhaps you made the whole thing up? That's what I'm going through right now with Feat Chains. I could swear there were alternate rules somewhere giving the option of certain feats improving along with the character, like Power Attack advancing to Improved Power Attack without having to take on a new feat. Does anyone know what book that was in, or am I indeed making things up in my head?
Kobold Press had that IIRC in New Paths Compendium
Basically Improved Trip / Disarm / Sunder / Two-Weapon Fighting / ETC became the Greater ones for Free when you hit the prerequisites.
I could have sworn I had read a rule about undead being affected by their own moral effects....and have since not been able to find it.
/sigh
The Vampire Barbarian in the Monster Codex had an ability that did that.
That's exactly what I was thinking of! Thank you very much, I'm glad I'm not crazy. :)Kobold Press had that IIRC in New Paths Compendium
Basically Improved Trip / Disarm / Sunder / Two-Weapon Fighting / ETC became the Greater ones for Free when you hit the prerequisites.
Glad to be of service! Enjoy because they helped out our martial heavy campaign pre-Unchained and WMH/AMH with a Rogue and Fighter. They are power for free mostly (though some prerequisites are harder to hit, like TWF requiring 17 Base Dex IIRC), but it is a straight upgrade for the most part.
TPK games also has their Feats Reforged line that takes feats from Core, Advanced, and Ultimate books and rewrites them to scale with level.