I definitely agree organizational features are needed. I'd even be happy to see a simple tag cloud in the right sidebar. It would show only tags that user had utilized, and clicking on the tags would filter to show only their content with the tag in question.
I'd hope this would be a fairly easy feature to implement, even if just as a stopgap while more detailed customization options are in development.
Something simple would be enough, I think. So far the feature rollouts have been satisfactory :)