Warrior Final Attack after Big Bang

Unlike you, I've actually played these classes with Final Attack, and it doesn't provide a significant or noticeable bonus in training.

Apparently, after BB, it no longer affects either your mobility or the rate at which you can spam attacks.
So regardless of whether you're running around Slash Blasting mushies, or standing still spamming Intrepid Slash at HT, whatever tiny damage bonus FA gives is welcome.

The question that remains is whether there is a place to put those SP that will be more beneficial.