I personally believe that they should have gone with the first concept art of Lord Vader's face. All too often we as a species underestimate what is possible to endure. Society supposedly says that beauty is only skin deep, and that you should look beyond appearance. In most forms entertainment the faces of individuals have a certain diformaty which in most cases has an azthetic appeal visually; which I think kinda defeats the purpose. There are tons of conditions, diseases, burns, scars, etc. Point is some in cases, you can only dress up so far. There's only so much reconstructive surgery you can go through without side effects. Lastly, Aninken was practically bathed by lava while also breathing in toxic gas. How in world does he have 95% of his face in tact?