I live by the motto: Without vision you perish. I can clearly see where the executives in charge of Dallas both lost vision for the direction of the show and then failed to remain true to what vision they had left for Dallas in its later years. Their failure to remain true to their vision for how the show would proceed is evident to me in how they handled the departures of Patrick Duffy and Victoria Principal. Both departures were equally big losses for the show. Bobby and Pam were both incredibly vital and popular characters. The only character more vital and popular was JR Ewing. I'm sure the executives at the show hated to see Patrick Duffy leave and hated to see Victoria Principal leave just as much. You can negotiate with people to try to get them stay, and I'm sure they did, but at some point when the actor or actress says: "It doesn't matter what you offer me; I'm still leaving" then you've got to make sure they know if they leave then they're leaving for good, if that's your vision for how to best proceed with the show. I've heard many times about how in show business it can be hard to trust people to keep their word, but in this case, the executives in charge of running the show couldn't trust themselves to stick to their word! After they realized they didn't have the discipline to stick to their own decision, after they brought Patrick Duffy back even though the audience had seen Bobby die, they must have known how indecisive they were. That's why they didn't have Pam die in the car wreck. They were afraid that they might bring Victoria Principal back anyway, even if Pam died onscreen. They'd resurrected Bobby, they'd more or less resurrected Mark Graison, they toyed with resurrecting Jock, so they might have figured: What's one more resurrection? So since they couldn't trust themselves to stay true to their vision of how to proceed with the show, they didn't have Pam die. They were still thinking they might bring Victoria Principal back anyway, no matter what she'd told them and no matter what they'd told her. It doesn't look to me like any of them could trust anyone else to stay true to their word; they couldn't even trust themselves to do it. Well, when they can't have a character die when the actor or actress leaves because they might change their minds and want to come back, and the executives would be foolish enough to bring them back even though the audience had seen the character die onscreen, then the people in charge of running the show are too indecisive to be able to commit to anything. So it's no wonder that the writing got worse in the later years. How can someone write a good story when he keeps changing his mind about what he wants to write, and then even after he writes a story, he might later write another story that says the first story didn't happen? At some point you've got to commit to going in one direction and then do it. Without being able to commit to any long range plan, you don't know in what direction you're taking your show. You have no vision for how you want your characters to evolve or where your story is going. The characters don't evolve in any meaningful way and the story goes in all sorts of random directions that make little or no sense. That's what we saw happen to Dallas. Without vision you perish.