A forum is more than just the software that runs it, lobolover. It's a community, and each one is unique.
New members are of course welcome to make suggestions, but you have to realize that when you have come to know and understand our particular community the suggestions you make will be a lot more feasible.
Meanwhile, people come and go, the community shifts its focus. It might be that at some future date enough interest will evolve naturally that a sub-forum seems appropriate. But one individual can't lobby it into being. Whatever you may have seen happen on other v.bulletin forums, that isn't how it happens here.
You'll spare yourself a lot of frustration by continuing to post in the threads that interest you, starting new ones to see where they go, and waiting to see how things develop.
However, that is entirely up to you.