Maybe this time in Civil War, the twist is the Spider-Man doesn't reveal his identity.
That is a big deal since he might be the only superhero so far that would have one or maybe he's the start of a movement of masked superheroes that have a secret identity in the MCU. Scott Lang and T'Challa are both masked and may not have their superhero identities known as well at that point, unlike all the Avengers, S.H.I.E.L.D., and special people like Stephen Strange have all their info made public at the end of The Winter Soldier. If you throw in a masked Carol into the mix, BOOM
That is a big deal since he might be the only superhero so far that would have one or maybe he's the start of a movement of masked superheroes that have a secret identity in the MCU. Scott Lang and T'Challa are both masked and may not have their superhero identities known as well at that point, unlike all the Avengers, S.H.I.E.L.D., and special people like Stephen Strange have all their info made public at the end of The Winter Soldier. If you throw in a masked Carol into the mix, BOOM
you have a team that can side with Captain America and be the rumored new team that Cap creates as the post-credits scene of Age of Ultron.