Did you see this from Inside HigherEd,Research to Improve Retention, which lays out "12 research-validated risk factors." Obviously not all of these can be solved with resources/services of Libraries but a number can be. Here is the list:
1. Uneven formal academic knowledge and skills.
2. Lack of informal knowledge about being a college student.
3. Inadequate development of self-regulation skills.
4. Impaired self-efficacy and resilience.
5. A mindset believing in fixed rather than flexible abilities.
6. Inability to delay gratification.
7. Impaired ethical judgment.
8. Disengagement from the university environment.
9. Lack of interest in courses.
10. Issues in academic trajectory.
11. Psychological issues.
12. Financial concerns.
I continue to be interested in how we can be more explicit in "lifting the veil" on academic research such as -- how to pick a topic (not just a list of ideas), how to get started on research assignment, how to deal with frustration, how to make mistakes in research, how to troubleshoot problems/deadends, ethics in research, get out of the mindset of looking for a perfect source, etc. I know I assume a lot of background knowledge in the guides I make or sessions I teach. Seems, to me, like #1, 2, 3, 4, 5, 6, 7, 8, 9, and 12 are issues the libraries (along with many other campus partners) could have a role in working on.