Thanks for the input Pistachio!
So here are it is again after some feedback modifications:
I added rotation to both left and right shoulder in sync with the arms, and added horizontal movement to the collar bones. I think when combined with the chest bounce it suggests athletic movement pretty well. I also extended the right arm back a pixel to exaggerate that movement just a bit. And no more moon walking, the frame rate has been sped up to 80fps from the 120 of the walk animation.
I am having some trouble with the hip rotation. I see why it needs to be there and agree wholeheartedly but I have tried a few variations and nothing satisfies me thus far. Does anyone have any advise on how to approach this?
Also for context this is for a ARPG isometric type dungeon crawler. This was originally intended to be one of four directions covering down/down right/right but I am leaning towards the full eight orientations now so this would be down right.