[@HaleyTheRandom]
Work this out? You said you were uncertain, I clarified and changed, and then you said it's good. Then your coGM said it was good except for a few things, after I sent him the conversation and explained everything a bit better, and I add those few things- nearly exactly, since they were exactly the things I was going for- and you immediately (relatively) reply, saying that it's not good any more.

That's not being unable to "work things out." It's because I come up with something completely new and you not wanting me to go apeshit with it and screwing up the roleplay, because it's a difficult concept- anything quantum physics is difficult [and makes me giddy]- and could have unforseeable actions, because it can be a diverse tool. Having a power that controls metals sounds like a completely 'safe' and 'traditional' superpower, because, hey, it's metal. Like a more focused earth. Except, the modern world uses metal in practically EVERYTHING, which means that someone with power over metal would have power over weapons, communications, transportation, food, everything.

Don't call it what it's not. It's not a mishap, and it's not something that we just happened to not agree with. You agreed and he agreed and gave me no reason to think otherwise, until I finished it all up with the suggestions you two gave, and then you flatly say it's a no-go because I could surprise you with being creative. 

And it annoys the hell out of me, but I wasn't originally going to say that.