Like I say Mark I'm pretty much with you on this.
Think the recent glut of mash ups has happened for 2 reasons myself. Sure you'll agree with me on the first but maybe not the 2nd.
First reason is down to bone idle DJ's who can't be bothered to get off their arses & play & promote current new releases. We both know this happens on a regular basis, the EMS/Hilton thread shows this up.
Take my hat off (bet I get some more stick for saying that ) to folks like yourself, Roger, Lin etc who do go out & play contemporary new releases week in week out.
Second reason though is I think it's been a really poor year for new release material. Know a hell of a lot of folks will disagree with me & I'd love nothing more than to be proved wrong but there was just not much new stuff that did it for me in the last 12 months.