I haven't used it yet but it looks amazing. I am currently making a 3D indie horror game, in the game you can access computers, and some computers will have mini games to play, and I am going to use these sprite packs for some of the mini games.
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I have a couple of ideas. I found some assets on itch for PS1 type games so an original doom parody was one of my ideas. For that I was thinking the metallic theme. Another idea was a strategy game where you place different kinds of units like tanks soldiers and other military types for this I thought your paper or wooden themes. And the last idea was a futuristic rouge-like using pixel art. This one I think should be the hologram theme.