I bet it will come to wii. The userbase just keeps getting bigger and bigger, and like other devs say they cannot ignore that. If they got the engine ready for wii, and they've got a little COD fanbase going on , then I bet they will try again. With the legs it shows it could be at 800k this time next year, which I'm thinking would be a nice profit for them.
On top of this the conduit, MH3, DQ10, hotd, and madworld could bring some more hardcore fans that still haven't invested in a new console.
I wouldnt be surprised if they stepped it up too, to make it stand out more on wii.
Support good third party games on wii. Buy games like house of the dead overkill, de blob, madworld, the conduit and boom blox.