So this has bugged me for a while, but why are the forum, gallery and wiki seperate content types not using the core channel module?
A usable forum can be created by making a channel called “forum topic” with a simple title and body field, then a category group called “forums”. Comments are the replies and the whole thing can be made to look like a regular forum. It’s pretty effective although a little simple.
A forum module could still be used but it would benefit the whole system to take advantage of the core channel feature. The other modules mentioned above could be done in the same way too, especially the wiki.
Again, all we need is a channel called “wiki page”, revisions enabled, a title and body field, and a custom wiki text filter. A wiki module would probably still be needed to tie all of these features together.