Most of those things I wouldn't care about (dragon quest shit, Too Human), or probably would have believed could happen in 10 years (motion controls, PSP, Warcraft MMO). Hell, considering we were all still waiting for VR during that era, motion controls seem almost logical. The only ones that would probably really surprise me would be SEGA going down, and the concept of the DS. Maybe the Sonic and Solid Snake in Smash, but at the same time we all wanted Sonic in Melee so who knows. I wouldn't care about the Gamearts/Monolith stuff, nor did I care about it when it was originally announced.
The only things that would seem surprising are the new genres of games created, PC losing relevance as a game platform, digital distribution becoming so prevalent, and how lag-free online gaming is not only possible, but necessary.
I think it would be more interesting to make predictions about what'll happen 10 years from now, and we bump the thread once the time comes to see how accurate we were.