A script is only one component. Which is why I bring up Titanic. Practically every other aspect of it was flawless. The ONLY bad part was script. So, while you call it 'passable entertainment.' To me as someone who's studied this stuff? It was brilliant. Because I could so easily point specific aspects and say "bad script". It was easy to tell what was wrong, when and why.

SM's era is much more murky. Because there are some things that might be director's/actor's choice, but because as you say, the Moff likes control, those might be dictated in the script as well. It is much more difficult to tell where one line ends and the other begins. That's my only point. My problem is I'm personally not interested enough to care enough to sort it for Moff's era.