View: https://www.youtube.com/watch?v=tWYCS6k1IOA
Whoever our cackling villain is needs to, as I said, sound like they're having a fucking BLAST being evil.
Stane and Sterns are sympathetic, Loki is a complete shithead but still a loving brother, Creed McGee is just a regular asshole, and Hawkeye seems like it has a relatively sympathetic villain as per the first write-up for them.
So yeah, making Red Skull just, like, be having a lot of fun plotting mass murder and racial hate crimes and world domination could be an interesting angle.
...it depends on the plotline we go with. I could imagine some sort of, like.
"Defrosted Cap vs. Defrosted/revived Red Skull" kinda thing, where they're both trapped in a world they no longer fully understand but do ultimately find people willing to fight for what they believe.
In Cap's case, y'know, heroes and etc, and in Red Skull's a lot of assholes and neo-Nazis and whatever as part of his plan to [Whatever.]
Showing them as sorta, like, "The Best of the Greatest Generation" and the Worst, the valor and concern and desire to fight bigotry and hatred that drove some... and the overweening pride and gleeful evil of others.
The Hero and Monster of WWII back for one final battle with each other. Or something.