GWFS in patch 9 is surprisingly good.
It seems like this passive rerolls not only the initial weapon's damage rolls but also additional damage rolls attached to the weapon.
Considering the fact that most of the additional rolls are 1d4, it makes any of those rolls constantly reroll 1 and 2 outcomes, resulting in 3 or more damage almost every time.
It also seems to reroll the Divine Smite rolls!
Combine it with a gith greatsword which has an additional 1d4 roll to it and you get some pretty heavy slaps!
Here is an example (lvl4):
![[Linked Image from i.imgur.com]](https://i.imgur.com/Jg9JJv9.jpg)
I am not 100% sure it was an intended change but I think it is the buff GWFS needed. It was one of the worst options alongside Protection fighting style before.