,,,slightly off topic but..if a dj does play a set WITH imagination lets hope its to the right crowd,otherwise he gets the heave oh and bad press!!!.
As for copying playlists,all the tunes are out there for all to buy.There is such a thing as "in vogue / popular" etc.Some of these tunes are already in boxes and collections.Every playlist, apart from the top guys,is a "cast off" of others playlists.
Play what you love - recipe for disaster if the promoter wants a full dancefloor...