IMHO it's a crazy idea that will never work! Being a DJ is great for most of us, and we deal with it in our own way - we choose our gigs and perform to our abilities, and I'm guessing that most of us are very happy with that.
But a show like that would just make most of us look bad! Of course you'd get two or three exceptional 'technical' DJ's on the show that would Wow the audience with their turntable skills, but it would not take into consideration people like us, who work hard, simply playing music that people like, without going too much over the top.
Yes, mixing and scratching etc. is a skill, but in the real world, or in MY world, people just want to hear good music - not always mixed or beat-matched, but played in a pleasing and well thought out order.
I love mixing, but as a mobile DJ, who specialises in family parties, I rarely get the chance. It's not about your DJ skills, but more about the music you play to entertain people.
I'd be crap in a competition...
