There are some use cases where it would be nice to be able to choose a link field to summarize on a graph widget. For instance, if you are graphing Tasks by the Assigned To: field, you might want to sum the frame count from the linked Shot for each Task, so you can graph the total frames assigned to each artist. Currently only native fields for the selected entity are available to summarize.
Click 'Me Too!' to vote up this feature, and add any additional thoughts or use cases in the comments.