Liv Tyler
Had The Incredible Hulk been successful, there’s no doubt we’d be seeing more of Liv Tyler in the MCU. Unfortunately, it wasn’t to be, so she’s become nothing more than a casualty of the Hulk films.
What did end up being a misstep perhaps is the failure to cast Tyler as Wanda Maximoff/Scarlet Witch. When you look at Tyler’s poise and consider her graceful performances as Arwen Undómiel in The Lord of the Rings trilogy, it isn’t hard to see that she’d be the ideal candidate to play the calm-like-a-storm mutant.
There will be those who defend Elizabeth Olsen’s turn as Wanda, but honestly, she had the same amount of charisma as a half-cooked potato. In fact, she was so bland that I bemoan the fact that Joss Whedon killed off the wrong Maximoff sibling in Avengers: Age of Ultron.