Thank you for the detailed reply! I agree, it looks like it couldn't have been exploited anyways. As for the no hole card rules (I was unaware this is how they played in Australia!) With a truly random 8-deck shoe, it shouldn't matter whether the dealer's second card isn't dealt until the players are finished, so I am not concerned if you leave it that way. Again, when you get around to putting up a detailed list of the rule variations, just be sure to include that so people aren't confused.

Thanks again for the follow-up!