It's important to consider that the workers wouldn't have to replicate the tech tree of the past. With access to all industrial expertise, as assumed in the que

It's important to consider that the workers wouldn't have to replicate the tech tree of the past. With access to all industrial expertise, as assumed in the question, what could be done more efficiently, or what could be done to better suit the ergonomics of a 20 person team? I think the inverse question is also interesting. What technology have we lost, because our current infrastructure has negated our need for it?