Re: Captain America: The First Avenger-Review, Discuss, Grade, Sequel,
Tony Stark as a moral compass? Did you watch the two "Iron Man" movies Yminale? Especially in the sequel Tony was anything but a moral compass in fact his character arc was part of him growing into the hero we all know him to be. Anyways having THREE Captain America period piece films would be fine theoretically but I very much doubt you would be able to hold your audience through all three of those films. You could maybe get away with doing two period piece films before they got bored.
You need Captain America in your first "Avengers" film no matter what publication history and continuity dictate in 616. This film is using both universe's origins it would seem from what we've read and seen. As others have said in this thread you need Cap. He's the heart and soul of the team. He's the military strategist. The living legend. Plus he's one of the characters that fans will be looking forward to most seeing.
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Ignoring the The Last Stand since 2011.