I realize Archive and Install is an option, however, IMO not a very pleasant one given the time it takes to move 3rd party items back to their resident Library folders. And then there is all of the Apple related updates to process etc. How did life get so hard?
I do get your point though. I guess I'm looking for the "easiest" way to maintain a pristine copy in the event of a significant OS problem. I'll read more about the "sandbox" as I haven't used this feature yet.
Thanks for the feedback.