I brought this subject up with the Apptio engineers at a group I attended 4 years ago.
I expressed my excitement viewing how the data model trace audit worked, wow that is still awesome, especially with the new release of R12.
I thought maybe it would be cool to have the ability from an Ant's view to see what happens to a file once it is uploaded and see the formulas, filters, any transforms it use to roll up through the data model. Also it have the capability hover over the lines to see the internal technical stuff.
I was thinking out loud, next to the engineers