I can see why Richard O'Brian said this was badly miscast!
He didn't go into the detail in the interview I read but I can see parts of the movie why he could think that way..
http://www.thisiscabaret.com/richard-obrien-new-rocky-horror-film-is-misconceived-and-badly-cast/
Watching a few of the performances especially full videos of "Time Warp" and "Sweet Transvestite" and "Hot Patootie Bless my soul"
From what I saw in those the direction of remake is way off, Take Time Warp, dance choreography was way over the top then it needed it to be it just seemed completely unnecessary with the extra moves added to the time warp routine!
The only thing that shine that segment of the movie was the woman playing Columbia, Riff Raff on the Electric Guitar just didn't work for me...
Before I get responses saying I don't like Laverne cox for whatever reason, I actually like the woman, She an talented actress, Especially in the orange is a new black but I really think she was miscast in the role as Frank N Furter. Something just didn't sit right with me, Her singing wasn't the best and the performances was flat.
But for me what ruined the show from what I saw was the over the top acting, At one point I thought the actor who played Riff Raff at was going to have mental breakdown at the start of the Time Warp segment. The terrible dance choreography and some of the costumes were silly