Amazing art style!
Have you considered tilting the view ever so slightly and having the screen move ever so slightly in the direction of player travel to create a subtle parallax effect? I mean, the 3D is apparently already in place, so why not use it?
Also, the "wave" effect on the crowds in those animated gifs is making me sea sick. The crowds should definitely move (in reaction to player or playfield events), just not in that way.
EDIT: Whoah, just saw the beta video... so maybe a parallax effect will be too much because there's already so much screen shake... which just adds to my feeling of sea sickness... but maybe that's the effect you are going for?
EDIT: Ok, final question, just watched the video again... why do the girls appear in a ray of light, instead of, say, being pulled/thrown from the crowd?