I don't know how you can say that. Those characters are written with a personality and are given plenty of personality by the actors. Most characters in the PT have a personality, even if it's less personality than they should have, such as Mace Windu or Obi Wan, or the wrong personality, such as Anakin as portrayed by Hayden. Neeson does an excellent job in TPM and Natalie does a good job in that movie (though not in the other two). I really don't know how you could miss it. Maybe by being so against the film as a whole that you're switched off to things like that. Just as the other two prequels don't get enough stick, TPM gets too much. It was a bad movie, not real Star Wars, very artificial and packed with cartoon characters, but it had some elements that were genuine and some humanity, which cannot be said for AOTC, let alone ROTS.