Re: Eccleston comments on 50th anniversary special return
RTD does admit in The Writer's Tale that the early days of filming season one were a disorganized mess with no one really knowing what they were doing. I think it's been implied this is one of the bad experiences Eccleston had during his year thta was a factor in him choosing not to return.
"Internet message boards aren't as funny today as they were ten years ago. I've stopped reading new posts." -The Simpsons 20th anniversary special.