I like the idea. No, I dont suddently like ponzis nor would I encurage you playing any. On the other hand I see a demand. I dont understand it, but I dont have to. People are different and like different things. The way the ponzi games are currently run is very risky for players. All of those running a ponzi use newbie accounts to hide behind it. They have no incentive to make it work, to stick to the rules as they can very easily disappear. Someone with an old account on the other hand has something to lose. Yes they can disappear as easily, but would take a loss.

I would see how its running. Ponzis usually take high fees (in comparisson to other forms of gambling) thus this could be a worthwile bussiness for OP if done honestly. I dont want to go into any details (rounds vs. continous etc.), but Id say follow the 6 rules[1] to the best of your abilities and see where you end up.

[1] https://bitcointalk.org/index.php?topic=926237.msg10191421#msg10191421