Ever since Twiggy left and Tim Skold came in the music changed considerably; that album, umm, with that song Heart Shaped Glasses, that was a wreck! It wasn't even "Emo" I am not going to compare it, because some "emo" songs sound better than that crap!
Anyhoo, Twiggy came back, but even then the damage is done; the years have passed, Manson should just hang it up. I believe no reinventing, makeover, anything at all, will help. I like everything up to Golden Age of Grotesque.
As for Manson changing, who knows. I don't care. He is a musician; he is to make music; music that sells. Anything he dos or say, well, no such thing as bad publicity. He's stupid enough to cut his face for "emo" cred (hah, that sounds awful), whatever.
He needs to retire... even though he won't be going out at the top, it'd be doing the remaining veteran fans a favor.