Seasonally, there are certain categories that I would like to hide/show, however, I always want to keep them 'Published' so that they don't lose the SEO juice they've gained.
For example, when I just set our "St. Patrick's Day" category to published = false, it wouldn't allow us to visit the category page anymore. I believe there should be an additional Visibility option that simply keeps the category from showing up on the category menu, but still leaves the category page intact for SEO purposes.
This should be pretty easy/fast to implement.