If the project will never see light of day, it would be nice to see whatever script there is or was. If it's presented as a DH comic, that would be fine too.
With respect to the concepts in the thread, they are ungainly. That's their crime. As Giger often said, the Alien was an aesthetic monster. The original suggested grace and power. The best of the Kenner critters and other derivative works have that, as well. These, not so much. I think for the centipede, the insistence on keeping so much of the humanoid creature worked against it. The many-heads model may have been an experiment gone wrong, suggesting a serious birth defect. In that case, it works.