The Community Needs Assessment statement is one of the key features of a strategic plan. It demonstrates that the library has gathered information directly from those in the community (users AND non-users, as available) to determine needs and begin identifying goals and objectives.
Here are 4 questions that will get you started in going beyond the satisfaction questions:
There are many free tools you can use. Sometimes the upgrade is not that expensive and depending on the level of statistics and reporting you need, the free versions are usually just fine.
Constant Contact
MBLC Counting Opinion Survey Tool
Here are some articles and blog posts that relate to strategic planning for libraries.