Here is another item, similar to the Big Ideas. These are some key categories of questions for the field.
Questions for Instructional Design and Technology
I believe that questions can drive research and inquiry - but they also help to define the field. People with similar questions can form a community to help address or answer those questions. And the way questions are framed - that also helps to define a perspective can reinforce a community.
Like the Big Ideas list, these questions are out of context - no authors cited, no theories, no literature, no examples of illustrations. Just a list of questions I'm interested in understanding better, about the practice of our field.