So I find this bit from an interview that was done back in January. (Its google translate from Japanese, so beware incorrect translations.)
https://dengekionline.com/articles/26085/
"After clearing, you will use materials to strengthen Gunhild's sword, but this time we have made it possible to obtain strengthening materials for contents other than the Save the Queen series.
In the previous forbidden land, Eureka, there was feedback that "only Eureka has the means to strengthen weapons and armor, so it is frustrating." The equipment enhancement content up to "Kuren Hen" was completed if we proceeded steadily even solo, but the reason is that the forbidden land Eureka was premised on party play. We thought that it would be better to have a form that can be enhanced while playing the content, but it was stressful for those who do not do the forbidden land Eureka.
Therefore, this time, not only the dedicated field but also other contents are available, and both can be strengthened. From here on, there is a strong element of interaction, so I hope people who like that kind of thing will enjoy it."
Now they have made it required out of nowhere and its annoying because I sank time into fate farming, because I tried Bozja and did not enjoy it. Now I have to do it because in the Patch Notes for 5.45 says Fit for a Queen is required, which requires the completion of Castrum Lacus Litore. I'm just aggravated that I sank time into something to avoid something I didn't like and now I'm forced to do something they said I wouldn't have to do.