I don't know how I feel about this. The trailer had some funny moments... one thing I think is interesting is that the original movie didn't really go in for the lengthy shots of how the tech works (the science behind the toys, so to speak). I seem to recall some more stuff kinda like that in the second movie, with the slime brain/mood scanning, and the toaster, and stuff... oh, and in the original the tech used to identify Dana as human, and Lewis as Vinz Clortho- I liked the... I guess, for lack of a better word, subtlety, to those original scenes.
Possession was a big part of the second movie, and is a ghost staple, so that's cool.
Lots of cg ghosts, but that is to be expected.
I think I agree with Mikeybb for the most part, though- I just wanted more of the original- nerdish compulsion, embraced.