Marvel should keep them dead in the main timeline but bring back one or two using the multiverse for like, one movie like they are doing with Loki, or they could bring some back as Skrulls. I think they'll do this because it brings back the character without ruining their death.
Or maybe a villain (I’m not caught up on comics so idk if a villain like this would exist) brings them back maybe in an illusion of sorts and uses the dead to fight their former allies. Would be interesting but I also wanna keep them dead.
