I can see by the length of this one what you mean, LOL. I wish I could see this one full size though. I've zoomed as much as I can because it seems like may figures and faces are in there.
Simplicity/complexity don't determine the quality of a piece of work. Often I find, simple means much more complexity, if that makes sense.
I combine simplicity and complexity at times. When I get carried away, something like this is the result:
It appears as if the top and bottom are different but if you flip it over it's the exact same image.
I see what you mean. The mirroring creates a third image. All these figures and faces I'm seeing. That's another aspect that's caught my eye, plus the subtle aspects. Forgot to mention, I quite like your signature.