An older Anakin and Padme in TPM, along with the same actor playing Anakin for all 3 movies.

The biggest problem with Episode I is that we essentially have to re-acquaint ourselves with the characters because they are so different in Episode II. There is a new actor playing Anakin in Episode II, so that takes time getting use to along with an older Padme played by Portman. And QuiGon should have never been in Episode I, because that cut into Obiwan's screentime, who we really don't get to know til Episode II.

In many ways, the Saga started at Episode II because that is when you get to the nitty gritty of the main characters, and that is the biggest flaw of the Prequels.