The biggest differences I remember are that there were more species of dinosaurs, the kids were slightly younger and basically had their personalities reversed,

The biggest differences I remember are that there were more species of dinosaurs, the kids were slightly younger and basically had their personalities reversed, Nedry's hack was more sophisticated, and Genero turns all macho and becomes Muldoon's assistant instead of getting eaten. None of those seemed particularly artificial to me. What changes made you angry?