i think a lot of producers who are djs think making the tunes takes all the skill, then djing is the easy part.
and that's not true?
As secondline said though, it would sound shit if the stems were mixed together without being properly EQ-ed and compressed; can't see any way around that, given tracks of any reasonable complexity.
multiply that by, say ten and you've got a sludgy mess that's got far more layers than the DJ can effectively tweak on the fly
Saw jackmaster at Corsica playing what I presume to be 320s because they sounded...joyless. great selection, brilliant mixing, no joy
i think it should be on the listing info if a dj is playing vinyl or 320s or flacs. waiting for the days when we get excited about djs playing 'exclusive lo-fi all 128kbps set'.