Hi, I've been playing Among Us for quite some time and am really happy, that a second part is coming. I had the idea for an alien mode:
Everyone knows who the alien is and there is no cooldown, but you can hide and there is a bigger map so you have more space to hide and run. As alien you just have to kill everyone without dying. As survivors you have to do tasks to find a way to trap or kill the alien or escape, but if you escape only you left and the alien can still kill the rest to win. There could also be different teams of survivors that can attack each other to get things from them to defeat the alien.
As a another suggestion there can be random roles for the impostors:
Ninja:
Can throw shurikens out of distance. and can get invisible for a short period of time.
Hacker:
Can sabotage the ship.
Trapper:
Can set traps.
Alien:
I like the idea of Jeffrey Hernadez with the eggs and eating the bodies.
I hope some of these suggestions can be put into the game.