Would the PT have been more effective if it had been filmed as one block?
What I mean is, instead of three segments and gaps of some years between each, the whole story should have been written and shot as one (rather like LOTR). Theoretically at least, problems could have been better identified and rectified under this approach, instead of all the tripping up, uncomfortable backtracking and clumsy editing that came with the bolting together of three, not exactly seamless episodes.