I agree it would be nice if they'd just re-release the previous sets. The Lamb especially had a lot of nice content.
I'd love to see some kind of anniversary release with new content but I'm not sure what more could be done...realistically.
A new remaster of the original stereo mix?
Am I remembering correctly that a different (and complete) live show multitrack was discovered since the Archive 1 release? My only hope there is that the band would deem any live versions good enough to release without feeling the need to re-record things as was done for Archive 1.