Script approval. John Hurt once said something like: "I don't want the writers coming on the set and act. That's my job. I don't tell them how to write, that's their job, and I should respect them enough to let them do it." Stewart and Spiner, while they have a lot invested in their characters... they sure aren't writers. To be fair, some of Stewart's notes were solid, but as we're saying, the idea was not all it could have been.