Yep, moreso than you probably realise, FFS don't insult my intelligence, you are but a pup. DJ for 20 years and then we'll talk. (By that point of course I'll have been doing it for 31 and will still bat you away.)
The point of leaving out a part of a song is that you don't like it or it doesn't work or maybe they just don't want to use it. There are also sampling issues maybe they have to pay through the nose to use the bit that is so obvious. Maybe they just want to REmix it. In which case there is no reason to use the elements of the original
If you dont give examples the discussion is pointless.
Matthew B's Billie Jean remix for example doesn't play the best bit of the song till the final 2 minutes. But it's all about the build and getting there IF the dj so wishes to let the crowd have that bit.
Until the last 2 minutes, but it still gets there. Don't underestimate me just because you've been Djing for long enough to rock the bingo halls.
Ok, have you heard that remix of sweet child of mine? It plays the melody as a build up, then when the beat comes back in, it kinda of like, echoes it out. Thats an example I'm reffering to. The melody has been used so obviously theres no royalty issues, and even if it teased us for the first two build ups, that'd still be cool, but I think to hear that riff, over that dance beat, with everything, the kicks, hats, snares, bass etc would have been REALLY good. Because this particular remix never does that, it never reaches what it could be, its kind of a let down.
Now, I've only found thats been happening more recently than before as House/Electro kinda moves into its newer, modern groove. .. Theeeee (Sorry to sound cliche.) but the vibe of club music as it is now is so different to how it was, and it might sound really stupid, but if the music is a let down to the audience, then the whole, industry follows.
Imagine it gets to a stage where people don't know what it sounds like to hear a really good, empowering remix.
Thats why I say its a bit like an artist who paints a bad picture but craps on about the importance of it being bad. It still doesn't make it a good picture. If everyone then starts to follow suit, the standard drops and the next people to come into it are faced with lesser standards and don't know how good it COULD be.