The features that I want in a good gambling site is first, they should have instant deposit so you don't have to wait for an hour just for a confirmation.
Instant deposit means zero confirmations ? As per current situations of bitcoin payments, we all need to wait for hours even for one confirmation, still bitcoin works this way and we need to bear and wait.
If gambling sites start accepting payments with no confirmation, they start facing problems of double spending from scammers. I guess we need to innovate some other way instead of asking for zero confirmation feature.