I agree and like that PrimeDice has a user friendly design. It's definitely one of the best bitcoin dice sites out there. It would be really awesome if they added LTC, ETH, or DOGE.
I'd like to see PrimeDice add support for other currencies as well, but I guess for now we have 999dice.
I do not think that primedice and 999dice have ane related things to do since primedice is very old site which is very trust worthy mean while 999dice is just some scam site which already scam alot of people yet you said that site again on primedice thread. Does not make sense yo anything you said here. And btw such a big site like primedice do not even need to add some other altcoin to support them, I think they pretty good on managing their bankroll