There would be no need. The motion pictures were mastered in 35mm; the only reason they're recompositing Star Trek: The Next Generation is because it was mastered on video.
It would be nice if they would give the movies a proper remaster, though.
The movies could benefit from recompositing too, especially The Motion Picture. Imagine that scene where the Big E orbits earth as the sun rises without matte lines. Gorgeous.