Namor as I understand it is still tied up in contracts with other parties (albeit not Universal it appears), so I doubt we'll see a Namor appearance in Phase 4.I agree. This makes me feel like prequels are the direction Marvel Studios wants to go after the success of Captain America: TFA and Captain Marvel. I wonder who the main hero of the MCU WWI film will be. Anyone got any ideas? I bet it'll be an Invaders film with Namor and Union Jack. Except Captain America and Bucky aren't a part of it.
Union Jack already made an appearance in First Avenger as one of the Howling Commandos, so likely not him unless its a prequel to the prequel. But it could be a Freedom's Five movie, with Orson Randall's Iron Fist (predecessor to Danny Rand from the TV show) instead of Union Jack.