If it was a perfect world, the turn rate nerf would be rolled back, stab sweet spots would be returned to how they were previously and the penalties to athletics would be flat reductions instead of being percentage-based.
One thing the turn speed nerf did was push the metagame more towards balanced builds which is a good thing. However, I think that can be better accomplished by making penalties to athletics flat reductions instead of percentage-based.
If athletics was more viable, the game itself would speed up due to people being able to move and adjust faster. At that point, who cares if people can do 180 degree instant turns?