It seems the degree of criminality, if any, would hinge on the precise specifications regarding the rules of the electronic craps game and how they are communic

It seems the degree of criminality, if any, would hinge on the precise specifications regarding the rules of the electronic craps game and how they are communicated to the players. Your point is valid, a big incentive for the casino is the labor reduction. But this doesn't relieve the casino of the responsibility to properly run and protect the game. Someone needs to observe the dice rolls and ensure they are valid, if the players are repeatedly making improper throws but nobody warns them or voids them, it's hard to claim the players were knowingly cheating. I have to imagine the game itself has some protection built-in -- what prevents players from replacing the dice with ones they brought themselves -- and therefore if the game, and its human operators, didn't object to what the players were doing (which they were doing in public, in view of surveillance cameras and other players), the burden of proving "cheating" is difficult. Perhaps the casino will fall back on "rules," which then raises the questions were those rules, for this specific model of electronic craps (and not just a normal live craps game) posted in a conspicuous location, is the definition of a legal dice roll clear and precise, etc.