Lol, for all of the original Jockey's non-humaness, it still had arms, 10 fingers, a mouth, and two eye sockets...
Giger's many visions represented the evolutionary trajectory of a biomechanical future. A sexually repressed, mad A.I. creating a creature from an amorphous, unknown, black shoggoth-like slime; a violent and erotic perversion, transfiguration and fusion of human reproduction, death and machine is, quite frankly, totally consistent thematically with his work. Personally, I'd rather not have another Planet of the Vampires, it's been done.