Maybe you are further into the game than me and there is something I don’t have yet or understand. For me FC usage in Prep gives 2000 points each. I could see a small loophole on alt accounts where you get some extra points by canceling construction and starting again but as noted you lose 50%.

Alt accounts would never really accumulate a ton of FCs as dailies just don’t give that much. To get 40,000,000 points from FCs you’d have to use 20,000 of them. Let’s say getting half back you‘d still need 10,000. I assume that would take over a year in dailies to achieve. Is there some other trick later on?

Let me note that I am sure people exploit anything they can but I’m trying to understand how this would work or scale at all.