When this thread started, I couldn't describe why the saucer crash didn't impress me very much. Now, I've figured it out.
Despite the fact that I think it looked and sounded spectacular, it just didn't have a beg emotional impact for me. It's in the shadow of the Enterprise destruction of TSFS. In that film, although it was the refit Enterprise, it was still essentially the ship that we'd known through 17 years and many adventures. Also, its destruction was part of the theme of loss/death/rebirth in the film. It symbolizes the crew's loss of their past, sacrificed for the future of their friendships.
In Generations, I felt none of that. The saucer destruction was just eye candy. It had no symbolic meaning for me, nor did I have such a long history of knowing that ship.