Hello, thanks for the suggestions!
Regarding your questions
1 - I am planning to make the game start at night and the first cylinder being much more dramatic and having special music play during it.
2 - I will be heavily improving the cylinders and adding the martians coming out and the heatray that will shoot any nearby humans.
3 - YES! Weather conditions are planned but I forgot to make them before I released 0.4.
Hope this answered your questions!