It's one of the best love ballads of her whole career. Too bad it was only included on the deluxe edition.
I think that album version sucks. The first demo that leaked was everything! It was so simple, just Madonna and orchestra, beautiful melody - this was it. Then she added all those drums, filters etc. and from my favourite became (almost) the only one that I don't like to listen to from the whole album...
Also, I think that "Unapologetic Bitch" should have been a single - but I can't imagine a promo performance with this song, like she did in various TV shows.
The other ones I would choose as a single are: "Iconic", "Devil Pray", "Illuminati".
But, let's be honest, if "Ghosttown" failed - and it was Madonna's best single since "Hung Up" - was there any other song from "Rebel Heart" that would make it better?