Dunno, I like Queen mainly mercury but don't think they can really replace him visually or sonically. The music will just be dubbed in, might as well just listen to a cd or something and enjoy that. About the story part, tbh I don't want to know if he had troubles or whatever or the band issues if there was any as that might ruin why I like the music.
If they were Gona make a film, they shoulda done it when he was alive.