It is interesting, but we may all find that the alien with the human skull doesn't look quite right. Having eye sockets really made the newborn in AR look silly. I really think that was its biggest issue. The fact that the alien has no eyes is one of its main distinguishing features from a plethora of monsters out there. It's all about the teeth.
Then again, including the skull to show a connection with human DNA might be cool.. But it ceases to be alien I that case.