I feel like a "resources" category similar to what the Languages site has could be of use. One way would be to provide resources for people interested in providing answers, such as:
* Popular systematic theologies by tradition
* Popular exegetical works by tradition
* Popular church history works by tradition/epoch/level of detail
* Notable treatments of different theological subjects, grouped as needed. So, for example, "resources on the incarnation by tradition" or "resources on the Nicene Creed"
All of these could be identified as "free online" vs. "have to buy it".
Another type of resources might focus on helping people figure out which theological tradition they are most interested in.
* List of popular preachers/theologians/commentators by tradition and/or theological system
* Selection of diagnostic questions associated with beliefs that help identify different theological traditions
* Maybe a flow chart, or maybe just questions related to the trinity, baptism, free will, tongues, church governance structure, etc., that are roughly tied to traditions
This is little more than brainstorming at this point, so I'm not tied to these examples. But at this point I'm inclined to think that a Resources category would be helpful.