Rapunzel's epiphany
I've never really liked the way Rapunzel realizes she's the lost princess after noticing she subliminally used the symbol of Corona in all of her drawings. It's too far-fetched for her to be triggered like that and have memories from when she was a newborn and hardly strong enough for Rapunzel to actually be convinced that she's the royal baby.
I've always felt it made more sense for Gothel to have kidnapped her while wrapped in a royal blanket, which she just kept in the tower. Then, when Rapunzel gets home, she sees the similarities with the flag she got in town and recalls the story of the princess (whom she obviously resembles so much) being kidnapped from her crib by some old cronie, after which she realizes the truth.