- The ability to upload files other than .jpg and video to a post in a forum i.e. PDF file. This could be attached to the post itself or possibly just be able to upload the file via Dropbox but through the post
- Member privacy for each category i.e. a member of 1 category cant access all the categories (I believe others have suggested this as well)
- Sub categories (or topics perhaps) for each category and the ability to "move" or "file" posts into topics / categories