So let us say that I have a level 12 technomancer with an obsession with Angels. She also has ~100k gold kicking around and the appropriate tech-crafting feats to make a clonepod and a neurocam. She also has an unhealthy obsession with Angels and through magic, diplomacy, and questing manages to get a single feather from a medium-sized astral deva or whatever.
A few weeks of crafting, cloning, wearing a dorky helmet, and ritual suicide later she is (unless I am mistaken) an angel.
This also works for literally any race that weighs in at "medium size or smaller."
What happens then? What special abilities does she have? Does she now count as a different creature type? Did I miss some key element that makes this trick not work?