this deck is dead because 2 reason
1 - of course because this deck has the two best cards in the limited list
2 - because this deck already was limited, no amazoness field and you can obtain only 1 copy of queen
any list you try biuld it is 2 copy of princess + 1 copy of onslaught + 17 enginner, backrow and trash cards
It can have some success against darklords and gravekeepers, but it is really not good now overall. Konami is caught in a mess with the ban list: if princess goes off it, that would mean you could use 2 swordswoman and then that might be too much for amazoness 🔥. And if they free princess but limit swordswoman to 1, then onslaught can't be together with it unless they decide to ease up on it.
Limited 3 can also be used for many of the staple Spell/Trap cards in the game, to limit the power of both old and new decks from getting too much, especially new decks who don't have any other limited cards, and Lava Golem decks with their overuse of 3 copies of ALL the imbalanced Traps.
Cosmic Cyclone, Canadia, Floodgate, Aleister. Those cards should be affected if Konami implement Limited 3 rules. Imagine how many whales would be outraged if those cards get hit.
Real whales actually don't care. Their money is unlimited and they have 3 copies of every single card in the game. They can easily build post banlist top tier deck within minutes. It's the little dolphin that would be the most angry person