Nancy Fried Foster has self-archived XC User Research Preliminary Report in UR Research.
Here's the abstract:
This report summarizes the objectives, methods, and major software design findings from the data collected in the user research portion of the eXtensible Catalog (XC) project. A full analysis and interpretation of the data is not included here and will be provided at the conclusion of the project. This report includes edited results from the brainstorming sessions and a list of the features that emerged from the analysis of those results.