haha, this is lame, kinda...
i owned AD some years ago and asked for a metal pack a few times.
i always got very opaque answers from the AD team but in general it was like, "yeah, we'll see, that's actually a good idea but hmm, dunno, hmm..."
this is why i dumped AD and switched to superior. now, metal got kinda popular again and they are about to release a metal pack...