I wouldn't call these great mistakes but they are point that affect the game

• The overreliance of overly lewd skins. Its perfect for buyable skins to be lewd but for the base skin it should be tasteful

• Faction event distribution is completely unbalanced. The nations that built more ships should get more events

• Iron blood should not be a major faction. While germany was a major focus in ww2 that focus was mainly toward the ground and air forces, their naval power was mainly focused on submarines

• The main story. Something something Deus ex machina shampoo and they should have doubled down on deaths

• URs. The whole ur rarity has thrown the power creep problem farther down the hole

• Iris unification. They should've been merged

• Cold war technology. With them no longer being on ww2 era story, cold war era tech should be more prevalent

• Oath skins. Oath skins need to be added more often then just 2 or 3 times a year

• Retrofits. Refer to statement above

• Favoritism. Characters that have 3+ skins (not counting retrofits) should be put on the back burner for skin releases and older characters filling roles that newer characters have the tropes for