When a user opens up the forums it currently defaults them to the latest posts which isn’t good for several reasons it would be a better idea if it defaulted the user to categories so the user can choose which category or tag there want to view.
One of the main reasons I suggest this is because if a user opens a new topic in the latest posts, it will automatically default to the general category instead of the category there want. Due to experience with forums this will end up with a lot of posts in general which will make it harder for users to use the search function.