It's not a remake of the film, but the play -- and it's fantastic!
Haters gunna hate -- and I don't care.
Why remake the film? Because the number of young people who go to the cinema to see it are comparatively few, and be honest, when we go to see Rocky Horror in the theater we're not watching the movie BUT we're watching the experience of DOING the film. This remake captures the experience of watching TRH with the cut aways to the audience while making a bridge to a new generation with top notch production values AND vibrant colors.
In the original , after Sweet Transvestite, the film pretty much falls flat, but in the remake it keeps going strong.
One of my favorite numbers is Rose Tinted World. Compare it to the original. The new Brad and Janet really camp it up, the costuming and music are beautiful, and dance is fantastic and their dip in the pool is fun to watch.
Perhaps my favorite thing about the remake is that I understood something I'd never paid attention to in the original: Rocky Horror is about the transformative experience of watching a movie. Brad and Janet are us after the film -- after any film -- that is, affected and sometimes changed.