I haven't even seen any of the new effects yet, except for the floating madame leota head. Two things that I hope the imagineers will do will be to bring back the 'hatbox' ghost and give the hitchhiking ghosts better movement and animation.
One thing I have to ask though, how much do the ghosts in the graveyard move now since the new changes?
I'm asking this because I recently saw a video of Tokyo's version of the HM and all of their graveyard ghosts (especially the ghost band) move a lot and look very animated. Here's what I mean:
Starts around 3:58
Another thing I noticed was that their pop-up ghosts are a lot faster as well while Disneyland's are pretty slow.