Is it possible to be able to use any of the built in services without specialized modification to have a log of certain metadata fields being changed? 

The idea is simple, We have a Quick Fields session which we are hoping to modify at various stages over the next few months to be more and more accurate. The Session will be used with Quick Fields Agent and so that will bring a scanned image to the point it has most of the metadata. We are hoping to make that part more and more accurate and remove the need for an extensive Quality Control check being done immediately following that Quick Fields Session. 

Is there a way to track natively which fields are being changed by users during this QC check? I know I can do it with some trickery in Workflow, but is there an easier way to generate a report of this information so we know which fields need the most attention?