Good vid, Red.
However, I cannot agree with that a 'Three-Card Monte' needs to be repeatable. Yes, it needs to be unfair to the spectators, but if it needs to be repeatable, what if you indeed end with different cards (different backed cards, three of a kind, three totally different cards or such)?
Just remember, if you want to keep it ungimmicked, you will just rely on sleights in order to achieve the effect. It'd be difficult to do a change kicker and you'd be pretty much stuck with the corner or card bend or rip since you don't feel like using gimmicks.
As for the presentation on its own, you could of course always go with the classic, which is what the game, obviously inspired on the 'Shell Game' ('Three Shells And A Pea') is based on: "I bet you can't find it."