Post your idea, lets choose together a best one and we will also support the one with 1mbtc on the balance.
I'd suggest adding
Built-in Exchanger so that everyone can withdraw in the currency they want. I believe most casinos have this feature and it helps a lot for example for those who don't want to pay 0.6m
BTC on fees. I don't think it requires additional fund, already the bankroll fund is enough.