Live-action adaptations of any anime, whether for a TV show (Mighty Morphin' Power Rangers) or for a movie (The Dragon Ball Z movie) should never even be contemplated, much less attempted--especially in Hollywood. I present my argument to this effect as follows:
Warning: the maker of this photoshopped poster accepts no responsibility or liability for anything that may happen to anyone who actually tries to make this movie. He speculates that angry hordes of this anime's fans--even those who liked the dub--will most likely attempt to tear the cast and crew for this movie limb from limb if it is ever made. You are hereby warned not to make this movie.