I really love how you've done the head with this. Between the collar and hat it all looks very sleek and I like that without the hat it kinda gives this retro robot vibe. Though I would like to comment that I feel the body is missing a lot of those grineer elements that are the hallmark of Graxx gear.

Most of the body gives this feeling of sculpted plastic and there are odd metal bits sticking out in various areas that seem more elements of tenno/orokin design. I feel like your Mesa design would be a good comparison to make in that she is similarly lightly armored but still has the elements of industrial tech with batteries sown onto quilted cloth, sparse metal plating, thick leather with buckles to hold it in place.

No doubt the whole thing is marvelously done, I just don't think it looks very "grineer" you know? 'course I could also understand if you were tiring of that approach and wanted to try some new things, just thought I'd try to pitch in my two cents just in case.

That said I remain a fan of your work and look forward to seeing more of what you come up with!