Much like I prefer to believe Ann Coulter is secretly a comedian, I'd like to believe this game is one long joke. When we get to release day, they'll say "Just kidding!" That's not going to happen, is it?
Part of the trouble, too, is that Duke's egregious content was always... not excused, but tolerated because of its incredibly inventive design. Shrink-rays! Jetpacks! Floors that can be traversed vertically! But now that the FPS has been mined in pretty much every direction, it just doesn't seem worth putting up with anymore.
Unrelated: Have you played Bit.Trip Flux? I just reviewed it for Slant Magazine, and it's amazing.
Beat is on Steam, and is fantastic (starts a little slow, but picks up fast). But the Wii is really the ideal platform for Beat and Flux---the motion control makes it almost like a rhythm/dance game. And Void works really well with the Wii/nunchuk combo. Yes, Steam gives you higher-res, but it really doesn't matter.