It should be possible to create a button on a view that would open documents in the view a defined # of category levels. For example, open the top two levels of categories in the view.
I think that HCL should spend a lot of time improving the functionality of views. One of the advantages that views have over spread sheets is the ability to categorize multiple levels of documents. Categories are very useful but could be even more so.
The idea would be useful in helping users analyze data. In some cases the user wants to display the top category and one (or two) levels of categories beneath it. Users have asked me for this several times but I can't do it for them.