I think it's a great thing that demand is so strong that LE's have sold out instantly.

It's got to be tough for Stern to set the number: some games, they made too many (Transformers) and some games, they made too few (evidently Metallica).

Strange that Metallica is going back to having only one LE model, which breaks the pattern we've seen since Transformers (1 "Pro", 1 "Premium", 2 "LE" editions). Seems they made a mistake here.

If they promised their customers a limit of 500 "Master Of Puppets" games, then they should stick to that. Since there's obviously a demand for more than 500, though, they should make another LE edition, "Ride The Lightning", as others have said. I think it's a great idea. I'd rather have RTL than MOP. This solution would let Stern stick to their original promise of 500 MOP games, but still provide a window of opportunity for them to collect more money and build more games, which is theoretically what a pinball manufacturer is supposed to do, don't you think?