I often update categories. I might for instance have to split the development department into different sub-departments for frontend and backend as they have different software access and costs filtered to them. When I do this, I have to update all filters – everywhere – to take this into account.
I would love to be able to right click a category and select duplicate/copy to create another category item that is linked the same way.
By doing so I would only have to update the filters where they are supposed to differ, which is a small subset most of the time.