What constitutes 'success'?

We should identify what consitutes 'success' on the front end, rather than mid-stream or at the end of this pilot project. Or in the popular argot, how do we know if we did good? I offer these measures (in no particular order) to stimulate discussion:

1. Everything works, and works reliably
   
2. It seems like the project will scale-up from a few libraries to the whole state
3. The pilot is affordable, and the scaled-up version is cost effective as well
   
4. Users like everything about it, and use the heck out of it
   
5. The courier service(s) work, delivering books at a price libraries can afford to users or users' libraries within a day or two of when they were requested
6. Pilot project libraries decide to continue with the project

What would you add, subtract, or alter from this list?

Bruce