It would be nice to be able to select the fields you want to display as a result of a filter you create. For example, I was trying to get the "Fix for Version" to be displayed in a filter that displayed all unresolved bugs for my project, but could find no way to change the default fields. The "Fix for Version" field would have been extremely useful to display in this particular filter. It would also be helpful to be able to predefine a sort field for a filter, though this is easily corrected by clicking the field after the filter results display (it is a bit annoying to have to go through this extra step though).

I was debating whether this was Major or Minor priority and finally decided on Major because not having selectable fields in the filters severely hampers the capability and usefulness of the filters, though they are still very helpful as is.