I've noticed that there are several companies releasing really low budget games. There was one I saw at Best Buy the other day that was like a 3D Elevator Action or something. Spy Games: Elevator Mission. Along with a bunch of unnecessary sports games that didn't look like they improved on Wii Sports enough to even warrant them even being made.
Also, we're getting ports of PC adventure games such as Agatha Christie: And Then There Were None. I think there's going to be a bigger problem with the Wii than with the Gamecube. I think it's going to be over saturated with some really bad 3rd party games because from what I've heard it's easier to develop for than the PS3.