For the most part "newies" from back in the day, now called "oldies" were far more instant/obvious to the ear and the uptempo dance floor. Nowadays NS is more wide ranging and sophisticated, newies tend to be less immediate to most and grow on the dancefloor over a number of plays. We forget that some have not been listening to rare soul that long. it can go over your head, and it's maybe a little different to the latest TV ad music some got the introduction from..
If you're at a venue with a big empty floor, no matter how great the music and people the nights will miss that buzz from the floor filled with dancers. A pub with no dance floor pressure is an ideal place for upfront stuff especially the mid-down tempo pipe and slippers stuff
Over here (at times out of necessity at a start up club) we constantly attempt to introduce new people to the scene, the payback is some old reliables albeit in small quantities to keep possible converts interested. At same time we still manage to knock out a fair share of something different.
There is room for the dj who warms up/sets the mood/gets people dancing early with quality well known sounds, putting his indulgence second to getting the night up and running..What's wrong with a bit of known amongst the lesser known tunes over a night.
Preferably if you have a venue sufficiently filled with up for anything dancers rushing eagerly to the floor once doors open, that is utopia and I am envious you lucky bat*rd
Danny