I just replied to a post with this, but I thought I’d make an entire post about this as well so everybody can see it.

Regarding Chadwick Boseman, they can add him back in through a CGI remodel and an AI to replicate his voice.

The CGI remodel, well, they did it before on Star Wars, and that was almost exact, especially for the first try at something like that.

Then the voice replication. They won’t even need a voice-match (which they had to do with the Star Wars example). The AI only needs 5 seconds of audio to match the voice almost perfectly, but they have a ton of audio (an entire movie and some stuff from the other movies) to truly perfect the voice.

On an even happier note, they can do the same thing with Stan Lee. The cameos could come back if they go this route.