I think the lower arms could use a bit more work. They’re too small and need to be covered a bit more, in my opinion. I also think the back should be covered up a little more as well.The Toa masks on the staff look kind of out of place. I know it was on the original, and it’s up to you. Other than that, it looks great! I actually like the mix of colors you have going on.
I think you might need to extend the neck by 1 unit. Adding a small amount of white to the mata hand in the legs might help a little. The nuva shoulderpads should be angled away from the torso.