That made me laugh out loud. I’m happy to know that I’m not the only one that falls in this "possible art" rabbit hole.
Thinking "how would that artwork be" without actually creating it, needs so little work and is (I think) a very good thing for such one-shot-ideas, or when deciding what to do. And when a "big" artwork is done, some of these little ideas can be incorporated, giving the "big" artwork a more "detailed" feeling or "fullness".