I think a live CD featuring the CD era songs from 2001 onwards would be a terrific idea. I would want it to be a double disc, so maybe they could include the odd classic and also cover to tally it up to 2 disc volume.
I can imagine a nicely presented double case, much like the Live Era CD, but with Chinese inspired images. I don't know why they don't do it, the fans would love to get ahold of some quality soundboard material, and it would be a way for the band to promote CD at the same time.
I remember in 2005-6, there was a double CD kind of release that was stopped I believe. It had all of the artwork and even a tracklisting I think... but saying that, I'm not sure if it turned out to be fake in the end.
But it sure was a good idea.