So since we're adding submarines...

[Beckett]

This need to stay with the new rules. Not only that but also should require that the other three players are from your FC as well.

This actually makes a lot of sense. It's doubtful that the new 4 member minimum requirement to buy an FC house will be enforced beyond the initial purchase of the plot, which means people will easily be able to hire 3 random people to join their shell FC while they buy a house. While it's annoying for legit players, the requirement of 4 (FC) crafters to make anything in the workshop would disincentivize folks from buying/keeping shell FC houses, at least a little.