A very valuable perspective, Melissa. One distincion that I think it'd be useful to think through is scholarship vs. preservation. The former has traditionally been the turf of the professoriate, while the latter is the responsibility of library and museum professionals. Question: how is digital media blurring the lines in both directions?

And a caveat: don't mean to imply that librarians don't practice scholarship or exercise intellectual judgement, just that most monographs, critical editions, and other traditonal scholarly products are assumed to originate from within the appropriate academic departments, with the library playing a somewhat different role in the overall institutional ecology.