I get the impression from the overall design that this mech is designed for industrial use rather than military; like the plating is meant to protect the mech's workings from falling debris, vegetation (tree limbs, hanging vines, etc.), and the like rather than from weapons fire.
The actual lines look very believable, as though you sat down and drew something that actually existed rather than just a figment of the imagination. The limbs especially look very plausible; well-articulated for walking over a wide variety of terrain types. I assume the the panel above the small (fine work?) manipulator (on the front below the operator's pod) is an attachment point for different manipulator packages for heavy lifting/power work to complement the fine work manipulators on the bottom?
Why open the hatch and put the operator outside at such distance from the small arms unit? Well, I don't know exactly. Probably to get mechanical parts working while putting the opperator in direct sight of the work subject but at a safe distance... Anyways this is meant to sparkle imagination
reminds me of caza... a serious compliment! btw...