Maybe you're fine with using HTML for your profile, but you want to use the Rich Text Editor for your storygames. However, if you disable Rich Text Editor, it's strictly HTML for everything.
This is my suggestion. When you access the profile editor, let there be two more options for having the Rich a Text Editor. The three RTE boxes would be kind of like this: Enable Rich Text Editor in profile, Enable Rich Text Editor in forums, and Enable Rich Text Editor in storygames. That way, you can use HTML in the forums, but use RTE anywhere else, or the other way around.