Thank for taking the trouble to write a comment form regarding your suggestions for the library at Polhill.
Drop box:
The Returns Unit outside the library can be viewed as bit of a mixed blessing. If you are used to returning books inside remembering to do this before you come in is a new behaviour and inevitably will be irritating while you get used it. Dropping the books off in the Returns Unit is an advantage because
you don't have to lug the books around the library
or
you can drop them off as soon as come on campus so you don't have to drag them round with you
Staff "who aren't allowed to help us"
I am sorry that just simply isn't the case.
Staff cannot issue, return, reserve or renew items for you but they are expressly there to show you how. If you have been refused help with this please tell me when it was and I will follow it up.
Taking routine, mundane tasks away from skilled staff frees them up to deal with more complex enquiries. Lots of businesses now have a self service element. Learning Resources has introduced self service to manage queues and make staff available for the more in depth, skilled and difficult to solve questions from students.
At Polhill particularly as well as the comments above, it also means you can return your loan items at any time. You are not tied to library opening times.
Library staff do not need to be stamping books, the value of skilled staff is in dealing with specific problems and guiding early stages of academic research.