Vampirism, at least for me, you don't get a bounty at all. I always thought that was weird. I read vampires of Illiac Bay and I found out that the man who became a vampire died and rose again three days later. He went to a tavern wench whom he was great friends with. And she didn't even recognize him at all. So I guess the fourth-stage you look like a walking corpse, and when in the first stage, you look more human-like. At least for the "Cyrodiilian/Skyrimian" vampires. I think in Daggerfall, you are permanently changed until you find a cure.
Yup Daggerfall vamps died in the process of changing and it twisted their appearance. Nasty variant of the strain. They still had human like aesthetics but not the ones that would make old friends recognize them. Actually I'm beginning to think that Morrowinds monstrous vampire appearance was atypical and is mirroring Azura's curse on the Chimer. Vampirism definitely affects appearance across the realm but not near as bad as the strains found in Morrowind.