Gaga's main selling point was that she was a generic dance pop artist that the GP was allowed to like, because she was talented and mysterious.
That same trick will never work twice. She can't go back to dance pop and get back her cool factor at the same time. She's already lost all the mystery. People have figured her out.
So she'll have to let the music do the talking. And that's a problem. Her voice has become harsher and less GP friendly over the years. She needs a song that would be a smash hit no matter who sings it. Something like Crazy In Love. Everybody is looking for songs like that, and they're very rare. We know she is not capable of writing one herself. So it'll be very difficult for her to come back.
