One of the neat things about knowing next to nothing about a system is that you can do all kinds of speculation. We've done a lot of speculating about what it would take to sell the casual gamer a revolution already, but here's an equally interesting question.
What would Nintendo have to do to not sell you a revolution.
Here's some stuff I can think of.
Launch price: If the console launches at $250+ and the games are $59.99 each, I might be tempted to hold off
Controller price: Chances are none of my friends will buy a Revolution, because none of my friends ever buy consoles they just play them over here. So I'm stuck buying umpteen controllers. We know the controller is going to be revolutionary, wireless, and feature a rechargable battery. If they cost more than $50 a pop, that might effect my decision.
Launch Lineup: I'm looking forward to SSB3, but I don't know if it'd sell me a system by itself. We know there's a Metroid in the works, but I think I'm the only person on the planet who wasn't all that impressed with 3D metroid in the first place. I need something else, either at or near launch. Like the Cube had Rouge Leader.
Download Titles: Two keys here: price and availability. If Nintendo announces that these titles will be $10 each, and limited to 1st party titles, it will probably eliminate this as a selling point. Lower prices are better, but at a minimum, Square Enix and Koei absolutely MUST be on board.
Not that any of this is going to drive me into Microsoft or Sony's arms. I'm completely underwhelmed with the Xbox 360 (which doesn't appear to have my kind of games anyhow), and Sony's launch price is shaping up to be prohibitive for me. Likely if Nintendo messes up the Rev bad enough I'll just stick to buying what Cube games I don't have yet and DS titles.