Mecha fan i am... i noticed you dont have a stomach or waist area for it to bend or pivot from. That will be awfully difficult for it to do basic movements.

What texture did you use btw? Ive been looking for some good mecha textures, hard to find them.

IDe say keep the holes, but add like a lens over it or extend them so the camara projects from the hole. Giving the hole more obvious purpose.