I sure hope IP realizes that people what more saturated colors, at least to the point of being realistic. I don't care for overly saturated colors, personally.
My other main gripe with the IP film is the sharpness and resolution of the film, which are greatly lacking. That may in part be due to the camera lens or film plane accuracy. I would not expect results such as you might obtain with an APO-Rodogon-N on 4x5, for example, but the IP film I've used so far gives downright soft, almost mushy results.