I did read the question, in your very post you admitted to taking other people’s work to resell:
If I were to take multiple screenshots of popular AAA 3D games (such as Call of Duty, Doom, Left 4 Dead etc), then manually cut-out the weapons (in GIMP/Photoshop), then manually re-trace them as “pixel-art”…
I don’t see how there is any ambiguity there. You’re looking for a way to take the work of others and change it “just enough” so that you won’t get caught. I think the intent is pretty clear here, and I can tell you now that it is against our terms and you will be suspended. I’m going to close this thread since there doesn’t appear to be any constructive discussion to be had here.
Thanks