Why should I stop? Is there a "rule" in these forums that doesn't permit discussion of this topic?
And dude, you only have yourself to blame for my "obsession" (I simply call it curiosity) about "rules" in fantasy in the first place because you mentioned Brandon Sanderson to me on these very threads last year!
And I think it's perfectly fine to quote other franchises. There's not THAT many ideas in fiction that are totally new and original these days. So I have NO problem when Marvel and DC adapt ideas from other franchises to improve their characters.
I thought the NeverEnding Story had an interesting magic system:
"When you changed something with magic, it changed in the past and future. So if you wished to be strong, you lost all memories of anytime you were weak. Over time most magic users ended up completely wiping their own identity and becoming drooling idiots. One of the main story arcs is the hero realizing this is happening to him, and then attempting to rediscover his identity."
But I do agree with you that Zatanna benefits MASSIVELY by hanging around Diana. It's an interesting pairing and I think their partnership sounds like a great idea. Unfortunately, Wanda can't tag along with an icon, so she's got some problems on that front.