I've moved this post over to the Tableau Server Admin section of the Community where you're more likely to receive a helpful response.
In the meantime, have you seen New Views for Tableau Server Administrators — BI on BI by Michael Chen?
John, I built a datasource for Background Tasks some time ago that I use for my workbooks. It may be a little out of date, but will still hopefully be helpful.
I typically look at a modified version of the Background Task admin view. I find this method a lot more helpful. The marks have URL actions that let you email the owner with the failure message, and there's always a link to take you to the datasource / workbook in question. The most frequently refreshed content is at the top, and the least-refreshed is at the bottom.
Hope that's helpful!