I would bet against you on this one, especially if CoD 7 is released on the Wii, DS, and PS2 again (which I hope it is as the Wii needs good core games with online).
Also, CoD 7 is supposed to be Vietnam based. WaW suffered from the glut of WW2 games on the market. As far as I know, there aren't really any Vietnam games at all on the 7th generation consoles. If they do this game correctly, I think that it will quite refreshing and a nice addition to the FPS genre. I just hope that they make good use of the choppers in this game. It would be really cool if they let us fly the choppers in multiplayer.
Most anticipated games of 2011:
Uncharted 3,Legend of Zelda: Skyward Sword, Rocksmith
Modern Warfare 3, Super Mario 3D