Really nice asset pack! Might I suggest adding something like a building generator, like one that you poor fuel into? Thought it would be a good addition to this series.
I was thinking something similar to this made by Halbot Studios for his generator tutorial.http://youtube.com/post/UgkxNAbGmXHTNas1RClvQpVZ6YVfRJiowCwz?si=WKWPyoxd4VQZCgO3