It seems pretty clear that there is interest in exploring the mur... uh, morphing of MARC. There are now some active email discussions (on the MARC list and on the ngc4lib list). However, neither the blog format nor email discussion are going to move us forward very well. We need a collaborative workplace where we can all add to lists of requirements, where we can share "prior art" links, and where we can mock-up solutions. I cannot easily run a wiki on my web site, so this is a call for a donation of a well-run sandbox where we can take these ideas a bit further, or information as to where one can do this.
Meanwhile, I'll gather up comments from the various discussions and post a summary.
Thank you all!