Re: Will the Red Skull Return?
Which begs the question, what has he been up to? I think answering that question may be a problem because you need the answer to be something that doesn't seem silly for him as a character. Sort of like you wouldn't have a movie where Spider-man flies a spaceship to take on Annihilus (at least not in his own movie).
Though they could just get around it by going the 90's Spider-man cartoon route and have it where he's essentially teleported from that moment to whenever they need him for a sequel or whatever. I don't really recall what the device was in the 90's cartoon, but it seemed vaguely teleport-ish and both he and Cap were stuck in it (and funnily enough would go back into until they were needed).