I of course, feel the need to point out Grace:
For the first couple eps, we all thought that Grace was some poor manager/agent, whose thankless job was to put up with a bitchy diva and schedule her public appearances. Then there was the Gallia IV arc. That changed everything, rapidly. But even after that, most people were still totally clueless as to her true nature, as Grace 2.0 showed up in Sheryl's hospital room hours later. It wasn't until the very end that anyone other than Brera really knew what was going on.
In the movie--she's fully revealed in front of everyone very quickly, and we see her "talking in the green cyber-room" about 20 episodes earlier than in the series.
She lost all of her backstory/intrigue. She's no longer a "hidden backroom manipulator" who's revealed much later.