Private tables are must, I know you have already declined this but Im sure more people, like myself, choose not to play then to sit while another player is multitasking making you sit and wait while they time out and come back, time out and come back, time out etc..... Personally this has become a deal breaker for me. I choose not to take a whole minute for one blackjack hand. I think reconsidering will be good for your website, while not reconsidering will lose players.