From the Dev chat, they said that the reason for the greatly increased Gates AA cost was that it's much easier for characters to earn an AA now than it was back during Luclin and early PoP. From that, I would guess that the rate of gaining AA points won't change, but rather the new ones will just cost considerably more so the value of each AA is diminished when you're buying the new AA skills.
Don't take that as gospel, it's just how I read into it.
____________________________
Belkira wrote:
Wow. Regular ol' Joph fan club in here.