I think any series CAN be good, even if they don't know where they're going from the beginning. Breaking Bad might be an example of that. Star Wars is actually another. Lucas just happened in to a lot of that stuff. Remember, Darth Vader wasn't Luke's father until several versions in to the Empire Strikes Back script (the original script had "Father Skywalker" appearing with Obi Wan at Dagobah).
That said, if you DON'T have a solid plan for how things worked out, you run a much higher risk of things not working. For example, despite what he now says, Lucas never really had a concept for the prequels and made those up on the fly. So while you CAN strike gold by winging it, you're probably always better to know what your ending is when you start.
And the folks involved in ME have said enough times that they were winging it, from Drew K's interview about not knowing what the Reapers were when they invented them to that guy who gave a speech about "the contract" (I forget... someone please link to it) where he flat out says that, while people think they have a grand plan for things, they are actually making them up as they go.
In my opinion, the story suffered for this. They foreshadowed things that never paid off and they painted themselves in to a corner in a lot of places.
One final point - I agree that Miranda could have been used a lot better, naturally within the script. She was TIM's number two. TIM is the primary antagonist. The fact that she wasn't part of the main story is mind boggling. And she could have easily been replaced by another character if she was dead... like, "Hey Shepard, you never met me but I was Miranda's closest ally. When she quit Cerberus, I did too, and now I want to help you because she's dead." That's a clumsy paraphrase, but it's basically the same idea of what happens if Mordin is dead.
Modifié par wirelesstkd, 24 novembre 2013 - 02:43 .