That's why I say fb is just a stepping stone. As you go up in scale traditional building techniques make more and more sense.
I think if you want to make something big and fun for just a few flights, the maker foam is a good choice but if large scale get to be your thing I'd say it's time to step up to more traditional methods.
I myself plan to use it for smaller builds... 😄
I see potential in it working well for single layer builds