I think it would be awesome to have games like roulette where you can see the other bets people are placing at the same time as you (Roulette wheel would spin every 15-30 seconds). Then you could have an option to switch to private if you don't want wait for the wheel to spin. Also you could have a blackjack table where multiple people can sit down at the same time (You could just implement 5 decks instead of 1).