I think Nintendo could use a talented western dev. They Retro is nice, but they only do 1 project every 2 years at the most. Nintendo has had a void there ever since rare left (and then went down the crapper)
However, I think they should form their own studio. That way they can structure the organization to their liking. And it seems nintendo know how to structure something profitable.
If Nintendo purchases any western devs, it should be the Conduit guys, they have the Wii HW down, and seem to want to work on Nintendo consoles.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut