I ran Just-Dice for a year, and this wasn't ever a problem until after I shut it down. (*)
Yeah, that's because presumably Just-Dice deposits go into the hot wallet, where you process withdraws from. On the other hand, my deposits go directly into cold storage (i generate the addresses with bip32), and I need to pull the funds out of cold storage into a hot wallet to process withdraws. So for every deposit in my hot wallet, I have over 100 withdraws.
If you are running out of outputs, it's probably because someone is using your site to "launder" their coins. You need to limit that account because he's messing things up for everyone else.
Yeah, it's especially a problem for me -- due to how easy it is for someone to empty my hot wallet. [Deposit 1 BTC into my cold storage, withdraw 1 BTC from my hot wallet. Bang my hot wallet is near empty]. But it's not the core of running out of output problems
protip: when answering forum posts in order to advertise your site, try to remember to spell your domain name correctly.
Ha, yeah.