Sometimes I would like to group a table view by a column, but I don’t want to actually see this column. I have a conditional format for this column, so it’s easy to distinguish by row color, and the extra text clutters the screen and means more horizontal scrolling.
Another nice option would be, if you do want the grouping column visible, rotate the text in that column 90 degrees. This would make long text would fit better in a very narrow column.