As I've explained three times now, they're not restricting the number of ships in any way. We've already faced a five Victory fleet today, it's just a matter of time until some nations field 25 Santissima PB fleets. All that is being done right now is put these ships behind a serious grind. Once that grind is completed, it's Santi, Santi, Santi, Santi.
Two Bellonas require more work than one Santi. The only reason we don't have all these Santis yet is because lack of BP, which is changing _right now_ due to the number of victories already being crafted, and the lack of level 46+ crafters, which will have also changed by April.
I predict that by the end of April we'll have seen the first PB with more first and second rates than third rates.
I've also not stated any change demands. I've posted my observations.
I don't know what would solve it. I do know that a Santissima being a mere 50% more production on easily acquired materials than a Bellona will lead to players crafting the best ship they can, as often as possible. The Santi needing 263 wooden fittings vs the Bellona's 197 doesn't cut it.