i think you should add a character with a gun, like a detective. he is never the imposter, and can only shoot one person. this could make it easier to eliminate a imposter that no one believed u about, just get the detective to shoot them. they could porbably be toxic and just shoot random people, so it might not be the best idea, but i think that would be cool.
also maybe a character who can revive dead crewmates if they get there within a certain amount of time. that could break the game tho, because the crewmate could just say who killed them so i dunno these ideas are probly trash but