Your HTTP server log files will give you an idea of what parts of MyLibrary are being used and how often. To some degree, they will also tell you who is using your service. The most complete analysis will come from the use of sophisticated SQL queries applied against the MyLibrary database. Based on the answers to these sorts of questions, and based on the input you get from your patrons and staff, you should be able to gauge whether or not MyLibrary is improving service in manner equal to, greater than, or less than the amount of time, effort, and money you are spending to keep it going. Roles get modified.
Budgets grow and shrink.
You know all this. MyLibrary is no exception. Based on your experience, continue with MyLibrary by starting over again with the first step or simply stop using MyLibrary. This is the end of the Issues to be addressed by MyLibrary Adopters. It provided a set of guidelines for using MyLibrary in your institution.