Oh, I dunno about this one chief…
Where Pohatu was smooth and slick whilst still having that overall bulky frame, this feels overly greebly and chunky (the chest in particular - I appreciate the idea of building it off of the original Mata torso, but it ends up looking like a brick). In almost all of his pictures he stands really awkwardly (I think it’s because of how thin the waist is, but I have no idea how you’d fix that without just rebuilding the torso from scratch).
I’d recommend keeping the limbs mostly CCBS (mainly the legs, they just look… off), seeing so many disjointed Mata hands is really distracting. I do like the shoulder armour though, that’s some nice parts usage. And I like the idea behind the sword hand, though I think having the same armour shell so close together looks a little off.
I hope that helps.