Zesuaium is a good example of a tech that Wes kept as something that only Yamatai could produce but changed that within the last 5 years. Having the Kuvexians able to make it was huge!
During the war, the Kaiyo was boarded by them and lost a piece of its hull during. We went to an independent trading port near Kuvexian territory and haggled for rescuing someone's grandchild in order to get a relatively small piece of the material to be able to patch our hull. It felt really taboo and special to be able to get zesu from a non-Yamataian source—it was even gold! I think that exemplifies something that Wes has loosened restrictions on and shouldn't be discounted.
During the war, the Kaiyo was boarded by them and lost a piece of its hull during. We went to an independent trading port near Kuvexian territory and haggled for rescuing someone's grandchild in order to get a relatively small piece of the material to be able to patch our hull. It felt really taboo and special to be able to get zesu from a non-Yamataian source—it was even gold! I think that exemplifies something that Wes has loosened restrictions on and shouldn't be discounted.