If you have a different card that readies Moana, she could quest again, readying all of the other princess characters again
The downside is that this isn't a super consistent portrayal of competitive Lorcana play
Changeling Titan counts as a bear, has great stats for its mana cost and synergizes great with Ayula, Queen Among Bears as the body is great for fighting and on top of that Champion a Creature mechanic causes another EtB trigger when it leaves the battlefield
Lorcana is newer, which means the ceiling is still forming
Many items wont be useful until the next turn, but there are many which give buffs just for being on the board, or whose effects activate when played
Artifacts and enchantments are plentiful, specifically equipment and sagas, and you can fit more of them in your deck due to them being creatures (or making creature tokens on ETB)