I agree wholeheartedly with your observations Dave. Bomb all explodes all but you can then "undo bomb all" and things are back to components. I have tried this out on a "Save as Copy" file. I see it as more of a quick edit tool. My myopic view of SU may catch me out with this tool; I can see the potential for trouble.
I am in no position to make grand statements given my newb status but I also like to develop the exploded view as you do, with an original off to the side. Caution is good.
When I'm done, I'll see if I can post my humble built-in drawing. It is not complex, it is a simple painted unit that I'm bulding as my part of a barter agreement. I now remember why I haven't bartered in years...