My players just informed me that they found a way to see all of the monsters I have (I suppose in the active listings, not archive?) and as a DM I'd rather be able to limit them with that, to preserve some element of surprise so when one is scrolling around to roll dice for the player who didn't show up tonight comes across a listing for a super important NPC or Asmodeus himself listing, basically informing them that that monster or NPC is in the wings of the campaign....