I'd like to be able to... - toggle columns on and offer - filter the content (eg, show only the rows where the Size column is "Medium") - re-arrange the columns into a different order - resize the width of columns
Grid column resizing and reordering are duplicates (search to locate previously submitted individual User Voice items). They are planned for the Q1'12 SP release, due in mid May. We will also ponder exposing header context menu which will allow you to show/hide grid columns based on the end user preferences.