At the 100 Club we've been trying to promote the more upfront end of the scene ever since Stafford made us aware of the rarer end of it all. We've purposely never gone as extreme as they did with the sounds and always mix in a few oldies where we can. The mainstays of the past 20 years have been Butch and Mick, primarily newies and oldies, in the parlance, but both capable of mixing a bit of the other in if needed or they feel like it. Other residents have been in-between the two probably playing current biggies from around the country and with good enough collections to be able to entertain the crowd which can vary quite a bit in taste from one night to another. The guests usually add a third dimension but I'd try to maintain the balance of primarily rarer stuff with perhaps 20-30% oldies over the night.
I think it works and has certainly lasted us for a bloody long time, however I do think the real hardcore rareties fans don't visit us enough as there's a lot of great largely unknown sounds that get spun but not being totally dedicated to newer stuff seems to prevent some from the occasional visit. I can understand oldies fans not coming as we only play a smallish percentage of those sounds.
In conclusion both oldies and newies scenes could probably do with a little more of t'other, but if people want to go all one way and it works, good luck to them. If it doesn't; reconsider baby. Ady