The ability to export hidden columns to Excel would be most useful - currently it only exports visible ones. And I don't want to go into 150+ Gradebooks and unhide the 5 columns - and then hide them just to do this.
Also, if Tracking Manager could see Hidden Calculated Columns too - this would save having to do a weird work around where you publish the hidden calculated column to a report cycle, and then look at the RC in TM - when it would just be much easier to directly retrieve the data from the Gradebook in the first place.