Oh!! And if there's anything you'd like to see added please let me know!!
At the moment I'm drafting up a sea/water-focused update but I'd be happy to queue up some other things as well!
I like that you've been doing them in sets. It makes it easy to group them for specific areas. I'd like to see what you already have cooking up :D The only think I can think of is possibly areas that match the sets in a sense or just keep making the mockups with each example as it helps me visualize how the assets work together and match with the enemies.