Originally Posted by chamber-music
Just recast him. No point bringing Hugo Weaving back if he really doesn't want to return.
I think Red Skull should return in the third Captain America movie.
Or even a future Avengers movie but ideally, having him back for the third one would make the series feel somewhat whole. Cap has a fairly short list of well-known foes so it's not going to be hard to get to most of them in the trilogy, although it would make the movies feel a little packed.