as i hinted at ... like it or lump it.. i think we are currently in a "transitional period" wrt dj technology.

erm.. dj'ing with cdj (and/or vinyl) + serato ... DOES give dj's a more physical feel (in a dextrous hands on way rather than blundering about with mouse and keyboard)... and ... further, old skool dj's havent got to put life earned skills in the bin and start over again... especially, in those genres that have dj skill as an important part of the musical culture (like hip hop for example - where deck skills are considered uber cool by both artist and audience) .. similar for other styles of music like techno etc where dj's are producing music live from audio sources (on what ever format)... blah blah blah ... dj's in some genres are very "skillful"... there has been a need to facilitate those skills before dj's considered making a career leap to digital.

in the context of digital dj'ing .. cdj is "another interface tool" ... not perfect by any stretch.. and there has been tech issues to overcome (like latency and audio quality etc) ... the tech will continue to change over time... if i were a betting person (which im not) i would bet the next level of dj booth would be a hard wired controller (or a digital mixer with controller or whatever) ... there is no need to stay with old skool adapted technology via interface ... as, not only is vinyl dieing.. cd's are dieing also.

either way... vinyl or cdj .. is a way of controlling the data on the software... i dont think we've seen anything yet, there's much more "development" to come.