The well has been mostly dry since the late 70s. Reissue availability is quite a bit better than it was then. And the exceptions to the rule would make for a fine weekend of listening at least - 80s Andrew Hill, Greg Osby, Mark Shim, Kurt Elling, Particia Barber, Javon Jackson, Dianne Reeves ... Stefon Harris, Jason Moran ...
Yeah, it might be time to discontinue the series. I've been passing up 90% of the RVGs lately because I have all the stuff. I suppose it would be worthwhile keeping it going if there are newer fans out there. Have no idea, however, if that's the case.
On the Mosaic debate, it's like a tempest in a whatever that phrase is. I'm quite happy with the way Mosaic does it. As someone said, you can't listen to cover art.