My two cents for this mess of a thread.
1. The GGW "cover" was the demo. Madonna blasted the same track in her apartment back in 2011. The hook sounded the same.
2. People talk so much crap about Rebel Heart and its demos, but completely ignore how much better GGW and TUTR were in their demo forms. I was fucking excited when I heard the TUTR demo but the final version turnt out to be tripe.
3. In regards of which album killed her commercial success, her last three records were all responsible. Hard Candy was a great album with very strong single materials (4M, GI2M, BGO). It was her new M-dolla character and that new face which turned people off. MDNA was DOA cause the music itself was crap for her standard. Rebel Heart was fantastic for me personally but it's not a marketable record at all - her fans hate those urban/trap beats, the soccer moms won't be impressed by some of the song titles, most songs are too mid-tempo for pop etc. What even is the audience for that album?