About the mask gap, I know some ppl are already aware of this, but from my understanding, the mask is NOT one solid piece. It is made up of at least two chunks, which are glued together.
Tankman said in order to fix it, he simply took it apart and re-glued it. That's what I remember him saying, anyway.
There won't be two differently sculpted heads being released. That's just my understanding though. This is why I called it a QC issue earlier, because the amount of gap that will be evident depends on how the head pieces are assembled. Hopefully it won't be too hard to tweak. I don't think people are going to need any "customizing skills" in order to make this small fix.
Should people NEED to make this fix? Nah, they shouldn't, but I don't think it'll be the end of the world.