Amazon: In For the Kill

In for the Kill: 20% increased movement speed, and 40% increased skill speed while an enemy has an Open Weakness.

Now, on paper this sounds insane. But, most of the time I barely even notice they have an open weakness due my damage "skipping" over it. I notice the slight movement speed. But, not the skill speed. I think to make this feel better would be decrease it by 33%. But, have it up all the time in the presence of a rare or unique.

I was initially thinking reducing it by 50%. But, it's one of the 4th ascensions. It still needs to feel very powerful. So, I think 33% should work.

Updated: Movement speed by 15%, skill speed by 30% in the presence of a rare or unique.

Thoughts?