A Library 2.0 OPAC

This, in ALA TechSource, makes Library 2.0 make much more sense. I maintain my criticism that it is too defensive, and emphasises  traditional technical and collection management aspects of our profession rather than some of the other more interesting parts.
But if every record has its own permanent link (is this sustainable?), if users can tag, comment on, or add trackbacks to a record or, even better groups of records,  and if anyone with the technical skills can build more plug-ins and library records can be reused all over the place,  then I can see how much it would transform services
My only question is will some of the more notoriously conservative library management system suppliers be happy with their customers doing this sort of thing?
ALA TechSource | Library 2.0 in the Real World.