Unfortunately, so far, the fort has little reason to go back and train Construction. Other training methods are still superior in almost every way.
However, I hold out hope that the future updates to the fort will allow us more customisation, and perhaps the possibility of putting a lot of time/effort into constructing things that other players may wish to buy. Currently, Construction is the only manufacturing skill that has no market for the items you create, except perhaps those looking for Crafted components for Invention.
Hopefully there'll also be a reason to reinforce the fort in coming updates. Right now it seems to me to be a completely useless feature.
~A~
18-Feb-2023 21:11:55