If this is a "hole" in logic on the site, and you are creating a competitive site to "show him how its done" I don't understand why you don't just abuse the "hole" in the site and win all of the investors coins and force everyone to invest into your scam, I mean site?  In fact at that point you wouldn't need investors you would already have a huge backing without having to share your "profit" from letsdice?  I dare you to put that 4K btc into JD and just abuse the system and prove to us non-believers that you are smarter than math.