First of all, I love Star Trek: TNG. In my mind, the first season was the worst of all the seasons. The reason: Tasha Yar.
The best thing to occur as a result of this episode was Tasha Yar's death. Yar's character was obvious and painful to watch. It was obvious (to me) that the writers wanted a woman to play the part of the security officer to show that women can do anything. Though women can do most anything, it really gave the feel of an after school special rather than a flourishing Sci-Fi series. That said, I believe that Yar's death was absolutely needed for the show to become as great as it did.