It appears that the Soundcloud purges might be over. With the recent Sony agreement, Soundcloud has now reached licensing deals with all the major labels. I could be wrong, but I imagine the mix purges and take-downs might be over. It now appears that the greatest threat to deejays and Soundcloud users is the company's financial viability. Here are some articles to read.
Soundcloud Reaches Deal with Sony
Soundcloud Launches Subscription Service
Is Soundcloud Pro a Contender?
SoundCloud Go: An Audacious Answer to Spotify That’s Dying to Stand Out