Why not implement said Doogcoin alongside Clam on JD, instead of in its place? Kind of like Alex's site where you can gamble a few different crypto's with one common trollbox, etc?
I just spent a few hours away from the computer thinking about things, and came to the same conclusion myself. There's no reason to switch from CLAM to the new coin when we can accept both at the same time. That way people get to lose their balance twice!
The Just-Dice codebase isn't set up to handle multiple currencies, but I can simply run two different instances like I did with the original Just-Dice and Doge-Dice sites.