Here's a thought-provoking talk given by Simone Kortekaas of Utrecht University Library in the Netherlands at this year's UKSG conference. In it, she talks about how they decided to do away with their discovery tool and steer users to Google Scholar, Web of Science, and Scopus. Utrecht appears to be a science-heavy institution. The title is a bit off, as they do still run their traditional catalogue for now, but still, their statistics showed their users were using tools other than those built by the library, so that's where they focused their efforts. Think you could get away with this at your school? Where are YOUR users actually starting their research?
Thanks for the link Heather!