I can't generate sufficient force to my forehead with the faceplam I'm doing right now to adequately express my shock that there are people *arguing in favor* of *charging* for a game (or demo, of sorts) Nintendo wants to give you for *free*, and actually believe that this is a *superior* method to drive hype and the marketing plan to get Bayo 2 (or 1) into a consumer's hands.
Let me explain a simple marketing concept to you: it's called KISS, for Keep It Simple Stupid. What you're suggesting makes the entire situation more complex than it needs to be since the vast, vast, vast majority of people understand *FREE* a lot better than paid demo + discount later, and *FREE* is a much better purchase motivator than the Rube Goldberg-like scheme that some of the people on this thread think is a great idea.
(Oh, and yes, I'm aware that this method is used in some cases, but it's STUPID, because it needlessly complicates the situation and is actually far less of a motivator to get people to buy than FREE, because it's much more difficult to follow than FREE.)
(In other words, thank God you guys aren't running Nintendo's marketing efforts, nor, lest you're deluding yourselves, do you represent even 5% of the potential customers for this game.)