I think there should be a wiki section for modding information. It wouldn't be explicitly modding related. Just information about the game in terms of game files and how they are used by the game and how they relate to one another.
I believe this information to be;
- Specifically relevant to these games
- Useful information that would benefit modders
- Something to help fans remain engaged with the games long after their development, and as such something that both developers and fans should promote