I have so many questions
While I agree with the potential hazards of this kind of thinking, I'd be interested to see some positives in addition to just the "pitfalls".
Better idea of valuation of labor in addition to materials? Reduction of waste? Some intangible "what we learned along the way" factor?
Posing hypotheticals is exactly how to test the limits of the system. It is a key component of the legislative and law making process. The entire field of law, millions of lawyers think about hypotheticals on a daily basis to analyze, write and interpret the law. Humans have evolved to have a dedicated frontal lobe whose job is to predict hypothetical scenarios and conduct cost/benefit/planning analysis. As a software engineer, I write hypothetical inputs to create unit tests so my system doesn't break. Thinking about hypotheticals is basically fundamental to all things in life and the universe.
What could you be intelligent at if you could just copy yourself a myriad number of times? What could you be good at if you were a world spanning set of sensors instead of a single body of them?
Body doesn't need to mean something like a human body nor one that exists in a single place.