Brainstorming

Out of these four my favourite would have to be flood. I think I like it the most because the hatch pattern I used to create movement in the water is aesthetically pleasing and it's the least plain out of them all. The only problems i'd have using flood is I currently only have a basic understanding of flash and creating a swishing water effect would be challenging.
My least favourite out of these four is the racism one. Although it could be a really cool movie I don't like way that I've drawn it so it puts me off of the idea.

 

From these four my favourite is plague. I think it is the most interesting idea because of the wide range of options on how the story could be told. I do really like propeller's simplicity also but it's not very original and I'd like to do something that hasn't been done before.