NSMBWii should help, at least in their side mission of bringing "lapsed gamers," back into the fold (what a better way to do so than to give them a modernized version of that same game they remembered playing back when they still thought games were fun?), but yeah, aside from the Motion Plus-driven promise of the next Zelda, and the mysteries of the Vitality Sensor, you're not seeing the kind of stuff that can definitively reverse this trend. Galaxy 2 isn't going to move hardware so much, and Other M (despite looking incredibly awesome so far) is a pure vanity project, though it may help to sway some more core gamers.
Epic Mickey actually could help, if we take the argument that "potential buyers want new motion content," to be true.
Monster Hunter: pissing me off since 2010.
