OK, I think I understand better now. As I posted a few weeks ago, I don’t think Transformers is a particularly good attraction. It suffers by comparison to Spider-man, which (IMHO) remains a much better attraction. My considerably less than stellar opinion of Transformers is based primarily on the overall story; essentially every scene is one weird looking Transformer fighting with some other weird looking Transformer, all of them looking essentially the same to a non-Transformer kinda guy. What exactly is the story?
Beyond that, Spider-man offers more variety and, I think to your point, better integration with the non-screen elements of the attraction. Flames, smoke, moving dump trucks, “levitating” boxes, etc. all make Spiderman a more complete experience. Still, Spider-man, like Soarin’, Mission: Space, and Toy Story Mania, heavily relies on the screen as its primary means of presenting guests with the ride experience. I really like Soarin', Mission: Space, and Toy Story Mania, although none of them make my "Orlando Top 10" list. IMHO, they are all more fun than Transformers.
Conversely, Journey of the Little Mermaid is just plain mediocre; not because it employed 1950s technology but because it did it so poorly.
By the way, didn't someone just mention that FJ's projection was recently upgraded because it was out-of-focus?